{"product_id":"hayward-proseries-sand-filter-inground-21-in-top-mount-1-5-inch-valve","title":"Hayward ProSeries Sand Filter Inground 21 In Top Mount 1.5 Inch Valve","description":"\u003c!-- more --\u003e\n\n\u003cstyle\u003e\n  .product-description h2 {\n    font-size: 1.35rem;\n    font-weight: 700;\n    color: #003f72;\n    border-left: 4px solid #0077c8;\n    padding-left: 0.75rem;\n    margin-top: 2.25rem;\n    margin-bottom: 0.75rem;\n  }\n\n  .product-description h3 {\n    font-size: 1.1rem;\n    font-weight: 600;\n    color: #005a9e;\n    margin-top: 1.75rem;\n    margin-bottom: 0.5rem;\n  }\n\n  .product-description p { margin-bottom: 1rem; }\n\n  .product-description ul {\n    padding-left: 1.4rem;\n    margin-bottom: 1.25rem;\n  }\n\n  .product-description ul li { margin-bottom: 0.5rem; }\n\n  .product-description .spec-list {\n    border: 1px solid #d6e4f0;\n    border-radius: 4px;\n    overflow: hidden;\n    margin: 1.25rem 0;\n  }\n\n  .product-description .spec-row {\n    display: flex;\n    border-bottom: 1px solid #d6e4f0;\n  }\n\n  .product-description .spec-row:last-child { border-bottom: none; }\n  .product-description .spec-row:nth-child(even) { background-color: #f0f6fb; }\n\n  .product-description .spec-key {\n    flex: 0 0 44%;\n    padding: 0.5rem 0.85rem;\n    font-weight: 600;\n    color: #003f72;\n    font-size: 0.92rem;\n  }\n\n  .product-description .spec-val {\n    flex: 1;\n    padding: 0.5rem 0.85rem;\n    font-size: 0.92rem;\n    color: #1a2733;\n  }\n\n  .product-description .mc-table-wrapper {\n    overflow-x: auto;\n    margin: 1.25rem 0;\n  }\n\n  .product-description .mc-table {\n    width: 100%;\n    border-collapse: collapse;\n    font-size: 0.92rem;\n  }\n\n  .product-description .mc-table th {\n    background-color: #00569c !important;\n    color: #ffffff !important;\n    text-align: left;\n    padding: 0.6rem 0.85rem;\n    font-weight: 600;\n  }\n\n  .product-description .mc-table td {\n    padding: 0.55rem 0.85rem;\n    border-bottom: 1px solid #d6e4f0;\n    color: #3e5468;\n  }\n\n  .product-description .mc-table tr:nth-child(even) td { background-color: #f0f6fb; }\n\n  .product-description .mc-table td.td-cur {\n    font-weight: 600;\n    color: #003f72;\n  }\n\n  .product-description details {\n    border: 1px solid #d6e4f0;\n    border-radius: 4px;\n    margin-bottom: 0.75rem;\n  }\n\n  .product-description summary {\n    font-weight: 600;\n    color: #003f72;\n    padding: 0.75rem 1rem;\n    cursor: pointer;\n    list-style: none;\n    display: flex;\n    justify-content: space-between;\n    align-items: center;\n    font-size: 0.97rem;\n  }\n\n  .product-description summary::-webkit-details-marker { display: none; }\n\n  .product-description summary::after {\n    content: \"+\";\n    font-size: 1.2rem;\n    color: #0077c8;\n    flex-shrink: 0;\n  }\n\n  .product-description details[open] summary::after { content: \"\\2212\"; }\n\n  .product-description details \u003e p {\n    padding: 0 1rem 0.85rem;\n    margin: 0;\n    font-size: 0.95rem;\n    color: #1a2733;\n    line-height: 1.75;\n  }\n\n  .product-description .doc-links {\n    background-color: #f0f6fb;\n    border: 1px solid #c2d9ed;\n    border-radius: 6px;\n    padding: 1rem 1.25rem;\n    margin-top: 1rem;\n  }\n\n  .product-description .doc-links ul {\n    list-style: none;\n    padding-left: 0;\n    margin: 0;\n  }\n\n  .product-description .doc-links ul li { margin-bottom: 0.5rem; }\n\n  .product-description .doc-links ul li::before {\n    content: \"PDF \\2014 \";\n    font-weight: 700;\n    color: #0077c8;\n  }\n\n  .product-description a { color: #0077c8; text-decoration: underline; }\n  .product-description a:hover { color: #003f72; }\n\n  .product-description .intro-note {\n    background-color: #e8f3fb;\n    border-left: 3px solid #0077c8;\n    padding: 0.85rem 1.1rem;\n    margin-bottom: 1.5rem;\n    font-style: italic;\n    font-size: 0.97rem;\n    border-radius: 0 4px 4px 0;\n  }\n\n  .product-description .compat-note {\n    font-size: 0.9rem;\n    color: #4a6070;\n    margin-top: 0.25rem;\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"product-description\"\u003e\n\n  \u003cdiv class=\"intro-note\"\u003e\n    The Hayward ProSeries W3S210T is a 21-inch top-mount sand filter for in-ground pools. Includes the 7-position 1.5\" Vari-Flo valve, pressure gauge, laterals, and base. Sand not included.\n  \u003c\/div\u003e\n\n  \u003ch2\u003eHayward ProSeries W3S210T 21-Inch Top-Mount Sand Filter for In-Ground Pools\u003c\/h2\u003e\n\n  \u003cp\u003eThe Hayward ProSeries W3S210T is a 21-inch top-mount sand filter for in-ground pools. At 2.20 sq ft of filtration area and a 44 GPM design flow rate, it handles mid-size residential in-ground pools and delivers 20-40 micron sand filtration with a simple backwash-based maintenance routine. The 7-position 1.5\" Vari-Flo valve ships installed and ready to plumb; the flange clamp allows 360-degree valve rotation to simplify alignment with existing piping.\u003c\/p\u003e\n\n  \u003cp\u003eSand filtration requires no cartridge replacements and no D.E. media handling. A 2 to 3-minute backwash cycle restores the filter bed when pressure climbs 8 to 10 PSI above baseline, and the same 200 lbs of #20 silica sand typically lasts 3 to 5 years. If you need the same filter paired with a side-mount valve, the \u003ca href=\"https:\/\/nonstopswim.com\/products\/hayward-proseries-sand-filter-inground-21-in-side-mount-1-5-inch-valve\"\u003eW3S210S\u003c\/a\u003e is the side-mount equivalent.\u003c\/p\u003e\n\n  \u003ch2\u003eHayward W3S210T ProSeries 21-Inch Sand Filter Key Features\u003c\/h2\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003e7-position 1.5\" Vari-Flo top-mount valve\u003c\/strong\u003e - Filter, Backwash, Rinse, Waste, Recirculate, Closed, and Winter positions. Integral sight glass confirms backwash cycle completion. Flange clamp allows 360-degree rotation.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegral top diffuser\u003c\/strong\u003e - Distributes incoming water evenly across the full sand bed surface, maximizing use of the entire filtration area.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUmbrella-fold self-cleaning laterals\u003c\/strong\u003e - Full 360-degree slotted laterals provide energy-efficient flow and evenly balanced backwashing across the full base of the tank.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFull-size internal piping\u003c\/strong\u003e - Smooth, free-flowing performance with minimal head loss through the filter body.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLarge pressure sand\/water drain\u003c\/strong\u003e - Full-size base drain for fast winterizing or sand changes without tilting the tank.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCorrosion-proof reinforced thermoplastic tank\u003c\/strong\u003e - UV-stable, all-weather construction rated for permanent outdoor in-ground pool installations.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eHayward W3S210T ProSeries 21-Inch Sand Filter Specifications\u003c\/h2\u003e\n\n  \u003cdiv class=\"spec-list\"\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cspan class=\"spec-key\"\u003eModel \/ SKU\u003c\/span\u003e\u003cspan class=\"spec-val\"\u003eW3S210T\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cspan class=\"spec-key\"\u003eFilter Type\u003c\/span\u003e\u003cspan class=\"spec-val\"\u003eTop-Mount Sand Filter\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cspan class=\"spec-key\"\u003eTank Diameter\u003c\/span\u003e\u003cspan class=\"spec-val\"\u003e21 inches\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cspan class=\"spec-key\"\u003eFiltration Area\u003c\/span\u003e\u003cspan class=\"spec-val\"\u003e2.20 sq ft\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cspan class=\"spec-key\"\u003eSand Capacity\u003c\/span\u003e\u003cspan class=\"spec-val\"\u003e200 lbs (#20 silica sand, not included)\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cspan class=\"spec-key\"\u003eFiltration Range\u003c\/span\u003e\u003cspan class=\"spec-val\"\u003e20-40 microns\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cspan class=\"spec-key\"\u003eDesign Flow Rate\u003c\/span\u003e\u003cspan class=\"spec-val\"\u003e44 GPM\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cspan class=\"spec-key\"\u003eMaximum Working Pressure\u003c\/span\u003e\u003cspan class=\"spec-val\"\u003e50 PSI\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cspan class=\"spec-key\"\u003eValve\u003c\/span\u003e\u003cspan class=\"spec-val\"\u003e7-position 1.5\" Vari-Flo top-mount multiport valve (included)\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cspan class=\"spec-key\"\u003eValve Port Size\u003c\/span\u003e\u003cspan class=\"spec-val\"\u003e1.5\" NPT\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cspan class=\"spec-key\"\u003eTank Construction\u003c\/span\u003e\u003cspan class=\"spec-val\"\u003eCorrosion-proof reinforced thermoplastic\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cspan class=\"spec-key\"\u003eApplication\u003c\/span\u003e\u003cspan class=\"spec-val\"\u003eIn-ground pools\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cspan class=\"spec-key\"\u003eShips With\u003c\/span\u003e\u003cspan class=\"spec-val\"\u003eTank, 7-position 1.5\" Vari-Flo valve, pressure gauge, laterals, base\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"spec-row\"\u003e\n\u003cspan class=\"spec-key\"\u003eWarranty\u003c\/span\u003e\u003cspan class=\"spec-val\"\u003e1 year warranty\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cp class=\"compat-note\"\u003eSand not included. Use #20 grade silica pool filter sand only. Pool coverage depends on pump output at actual system head and turnover rate targets.\u003c\/p\u003e\n\n  \u003ch2\u003eHayward ProSeries In-Ground Sand Filter Lineup: W3S210T in Context\u003c\/h2\u003e\n\n  \u003cp\u003eThe W3S210T is the entry-level in-ground model in this ProSeries lineup. Stepping up in tank size increases filtration area, sand capacity, and flow ceiling. Note that the W3S310S ships without a valve; a compatible backwash valve must be purchased separately for that model.\u003c\/p\u003e\n\n  \u003cdiv class=\"mc-table-wrapper\"\u003e\n    \u003ctable class=\"mc-table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eModel\u003c\/th\u003e\n          \u003cth\u003eTank\u003c\/th\u003e\n          \u003cth\u003eMount\u003c\/th\u003e\n          \u003cth\u003eSand\u003c\/th\u003e\n          \u003cth\u003eFlow Rate\u003c\/th\u003e\n          \u003cth\u003eValve\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003ctd class=\"td-cur\"\u003eW3S210T (this model)\u003c\/td\u003e\n          \u003ctd class=\"td-cur\"\u003e21 in.\u003c\/td\u003e\n          \u003ctd class=\"td-cur\"\u003eTop\u003c\/td\u003e\n          \u003ctd class=\"td-cur\"\u003e200 lbs\u003c\/td\u003e\n          \u003ctd class=\"td-cur\"\u003e44 GPM\u003c\/td\u003e\n          \u003ctd class=\"td-cur\"\u003e1.5\" included\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003ca href=\"https:\/\/nonstopswim.com\/products\/hayward-proseries-sand-filter-inground-21-in-side-mount-1-5-inch-valve\"\u003eW3S210S\u003c\/a\u003e\u003c\/td\u003e\n          \u003ctd\u003e21 in.\u003c\/td\u003e\n          \u003ctd\u003eSide\u003c\/td\u003e\n          \u003ctd\u003e200 lbs\u003c\/td\u003e\n          \u003ctd\u003e44 GPM\u003c\/td\u003e\n          \u003ctd\u003e1.5\" included\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003ca href=\"https:\/\/nonstopswim.com\/products\/hayward-proseries-sand-filter-inground-22-in-top-mount-1-5-inch-valve\"\u003eW3S220T\u003c\/a\u003e\u003c\/td\u003e\n          \u003ctd\u003e22 in.\u003c\/td\u003e\n          \u003ctd\u003eTop\u003c\/td\u003e\n          \u003ctd\u003e250 lbs\u003c\/td\u003e\n          \u003ctd\u003e52 GPM\u003c\/td\u003e\n          \u003ctd\u003e1.5\" included\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003ca href=\"https:\/\/nonstopswim.com\/products\/hayward-proseries-sand-filter-inground-24-in-top-mount-1-5-inch-valve\"\u003eW3S244T\u003c\/a\u003e\u003c\/td\u003e\n          \u003ctd\u003e24 in.\u003c\/td\u003e\n          \u003ctd\u003eTop\u003c\/td\u003e\n          \u003ctd\u003e300 lbs\u003c\/td\u003e\n          \u003ctd\u003e62 GPM\u003c\/td\u003e\n          \u003ctd\u003e1.5\" included\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003ca href=\"https:\/\/nonstopswim.com\/products\/hayward-proseries-sand-filter-inground-24-in-top-mount-2-inch-valve\"\u003eW3S244T2\u003c\/a\u003e\u003c\/td\u003e\n          \u003ctd\u003e24 in.\u003c\/td\u003e\n          \u003ctd\u003eTop\u003c\/td\u003e\n          \u003ctd\u003e300 lbs\u003c\/td\u003e\n          \u003ctd\u003e62 GPM\u003c\/td\u003e\n          \u003ctd\u003e2\" included\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003ca href=\"https:\/\/nonstopswim.com\/products\/hayward-proseries-sand-filter-inground-27-in-top-mount-1-5-inch-valve\"\u003eW3S270T\u003c\/a\u003e\u003c\/td\u003e\n          \u003ctd\u003e27 in.\u003c\/td\u003e\n          \u003ctd\u003eTop\u003c\/td\u003e\n          \u003ctd\u003e350 lbs\u003c\/td\u003e\n          \u003ctd\u003e75 GPM\u003c\/td\u003e\n          \u003ctd\u003e1.5\" included\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003ca href=\"https:\/\/nonstopswim.com\/products\/hayward-proseries-sand-filter-inground-27-in-top-mount-2-inch-valve\"\u003eW3S270T2\u003c\/a\u003e\u003c\/td\u003e\n          \u003ctd\u003e27 in.\u003c\/td\u003e\n          \u003ctd\u003eTop\u003c\/td\u003e\n          \u003ctd\u003e350 lbs\u003c\/td\u003e\n          \u003ctd\u003e75 GPM\u003c\/td\u003e\n          \u003ctd\u003e2\" included\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003ca href=\"https:\/\/nonstopswim.com\/products\/hayward-proseries-sand-filter-inground-30-in-top-mount-2-inch-valve\"\u003eW3S310T2\u003c\/a\u003e\u003c\/td\u003e\n          \u003ctd\u003e30 in.\u003c\/td\u003e\n          \u003ctd\u003eTop\u003c\/td\u003e\n          \u003ctd\u003e500 lbs\u003c\/td\u003e\n          \u003ctd\u003e98 GPM\u003c\/td\u003e\n          \u003ctd\u003e2\" included\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e\u003ca href=\"https:\/\/nonstopswim.com\/products\/hayward-proseries-sand-filter-inground-30-in-side-mount\"\u003eW3S310S\u003c\/a\u003e\u003c\/td\u003e\n          \u003ctd\u003e30 in.\u003c\/td\u003e\n          \u003ctd\u003eSide\u003c\/td\u003e\n          \u003ctd\u003e500 lbs\u003c\/td\u003e\n          \u003ctd\u003e98 GPM\u003c\/td\u003e\n          \u003ctd\u003eNot included\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cp class=\"compat-note\"\u003eFlow rates and filtration areas per Hayward published specifications. Pool size coverage depends on pump sizing, turnover rate targets, and site conditions.\u003c\/p\u003e\n\n  \u003ch2\u003eMaintaining the Hayward W3S210T ProSeries 21-Inch Sand Filter\u003c\/h2\u003e\n\n  \u003cp\u003eRecord the clean baseline pressure at first startup after loading sand. Backwash when pressure climbs 8 to 10 PSI above that baseline. Switch to Backwash, run until the sight glass clears, Rinse for 15 to 30 seconds, then return to Filter. Sand typically lasts 3 to 5 years. Signs it needs replacing: persistent cloudiness after correct backwashing, fine sand appearing at return fittings, or very short intervals between backwash cycles.\u003c\/p\u003e\n\n  \u003ch3\u003eFirst Startup: Loading Sand\u003c\/h3\u003e\n\n  \u003cp\u003eFill the tank halfway with water before adding sand to protect the lateral assembly. Add 200 lbs of #20 silica sand gradually. Run a full Rinse cycle before switching to Filter to flush fine dust from the new media. Note the post-Rinse pressure as the clean baseline.\u003c\/p\u003e\n\n  \u003ch3\u003eWinterizing the W3S210T\u003c\/h3\u003e\n\n  \u003cp\u003eBackwash before shutdown. Drain the tank fully through the base drain and leave the plug out for the off-season. Set the valve to the Winter position to drain the valve body and prevent freezing in the valve passages. In hard-freeze climates, blow out the valve with compressed air for additional protection.\u003c\/p\u003e\n\n  \u003ch2\u003eHayward W3S210T ProSeries 21-Inch Sand Filter Frequently Asked Questions\u003c\/h2\u003e\n\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes the W3S210T include sand?\u003c\/summary\u003e\n    \u003cp\u003eNo. The filter ships with the tank, 7-position 1.5\" Vari-Flo valve, pressure gauge, laterals, and base. 200 lbs of #20 silica pool filter sand must be purchased separately before the filter can be placed in service.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the difference between the W3S210T and W3S210S?\u003c\/summary\u003e\n    \u003cp\u003eBoth use the same 21-inch tank, 200 lbs of sand, and 44 GPM flow rate with a 1.5\" valve included. The difference is valve position: the W3S210T has a top-mount valve and the \u003ca href=\"https:\/\/nonstopswim.com\/products\/hayward-proseries-sand-filter-inground-21-in-side-mount-1-5-inch-valve\"\u003eW3S210S\u003c\/a\u003e has a side-mount valve. Choose based on your plumbing layout and available clearance above the filter.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails\u003e\n    \u003csummary\u003eWhen should I step up to the W3S244T instead of the W3S210T?\u003c\/summary\u003e\n    \u003cp\u003eIf your pump's output at actual system head exceeds 44 GPM, or if you want more sand capacity and longer backwash intervals, the \u003ca href=\"https:\/\/nonstopswim.com\/products\/hayward-proseries-sand-filter-inground-24-in-top-mount-1-5-inch-valve\"\u003eW3S244T\u003c\/a\u003e (24-inch, 62 GPM, 300 lbs) is the appropriate step up. Running a pump that consistently pushes above a filter's rated flow ceiling shortens the effective service life of the sand bed and increases backwash frequency.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the valve position count and what are the positions?\u003c\/summary\u003e\n    \u003cp\u003eThe W3S210T includes a 7-position Vari-Flo top-mount valve: Filter, Backwash, Rinse, Waste, Recirculate, Closed, and Winter. The Winter position drains the valve body to prevent freeze damage during off-season storage.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003cdetails\u003e\n    \u003csummary\u003eCan the multiport valve be rotated after installation?\u003c\/summary\u003e\n    \u003cp\u003eYes. The flange clamp design allows the valve to rotate 360 degrees on the tank body, so the inlet and outlet ports can face any direction to align with existing pool plumbing without cutting additional pipe runs.\u003c\/p\u003e\n  \u003c\/details\u003e\n\n  \u003ch2\u003eHayward W3S210T ProSeries Sand Filter Documentation\u003c\/h2\u003e\n\n  \u003cdiv class=\"doc-links\"\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n        \u003ca href=\"\/docs\/hayward-proseries-sand-filter-owners-manual.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\n          Hayward ProSeries Sand Filter Owner's Manual (Installation and Operating Instructions)\n        \u003c\/a\u003e\n      \u003c\/li\u003e\n      \u003cli\u003e\n        \u003ca href=\"\/docs\/hayward-proseries-w3s210t-parts-diagram.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\n          Hayward ProSeries W3S210T Sand Filter Parts Diagram and Replacement Part Numbers\n        \u003c\/a\u003e\n      \u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Hayward ProSeries 21-Inch Top-Mount Sand Filter for In-Ground Pools | W3S210T\",\n  \"description\": \"The Hayward ProSeries W3S210T is a 21-inch top-mount sand filter for in-ground pools. 44 GPM design flow rate, 2.20 sq ft filtration area, 200 lbs #20 silica sand capacity (not included), 50 PSI maximum working pressure, 20-40 micron filtration. Includes 7-position 1.5 inch Vari-Flo top-mount multiport valve with integral sight glass and 360-degree flange clamp rotation, pressure gauge, umbrella-fold self-cleaning laterals, integral top diffuser, and large pressure sand and water drain. Corrosion-proof reinforced thermoplastic tank.\",\n  \"sku\": \"W3S210T\",\n  \"mpn\": \"W3S210T\",\n  \"gtin13\": \"610377386951\",\n  \"brand\": {\n    \"@type\": \"https:\/\/schema.org\/Brand\",\n    \"name\": \"Hayward\"\n  },\n  \"itemCondition\": \"https:\/\/schema.org\/NewCondition\",\n  \"offers\": {\n    \"@type\": \"Offer\",\n    \"priceCurrency\": \"USD\",\n    \"price\": \"569.00\",\n    \"availability\": \"https:\/\/schema.org\/InStock\",\n    \"seller\": {\n      \"@type\": \"Organization\",\n      \"name\": \"NonStop Swim\"\n    },\n    \"shippingDetails\": {\n      \"@type\": \"OfferShippingDetails\",\n      \"shippingRate\": {\n        \"@type\": \"MonetaryAmount\",\n        \"value\": \"0\",\n        \"currency\": \"USD\"\n      },\n      \"shippingDestination\": {\n        \"@type\": \"DefinedRegion\",\n        \"addressCountry\": \"US\"\n      }\n    },\n    \"hasMerchantReturnPolicy\": {\n      \"@type\": \"MerchantReturnPolicy\",\n      \"applicableCountry\": \"US\",\n      \"returnPolicyCategory\": \"https:\/\/schema.org\/MerchantReturnFiniteReturnWindow\",\n      \"merchantReturnDays\": 30,\n      \"returnMethod\": \"https:\/\/schema.org\/ReturnByMail\",\n      \"returnFees\": \"https:\/\/schema.org\/RestockingFees\",\n      \"restockingFee\": {\n        \"@type\": \"MonetaryAmount\",\n        \"value\": \"113.80\",\n        \"currency\": \"USD\"\n      }\n    }\n  }\n}\n\u003c\/script\u003e","brand":"Hayward","offers":[{"title":"Default Title","offer_id":48560186523865,"sku":"W3S210T","price":569.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/3592\/7513\/files\/Hayward-ProSeries-21-Pool-Filter.jpg?v=1776883642","url":"https:\/\/nonstopswim.com\/products\/hayward-proseries-sand-filter-inground-21-in-top-mount-1-5-inch-valve","provider":"Nonstop Swim","version":"1.0","type":"link"}