{"title":"21 ft Round Above Ground Winter Covers","description":"\u003cp\u003eWinter covers for a 21 ft round above ground pool.\u003c\/p\u003e","products":[{"product_id":"21-round-above-ground-ultra-premium-winter-pool-cover-25-year-warranty","title":"PoolTux 21' Round Above Ground Ultra Premium Winter Pool Cover, 25 Year Warranty, BB0021","description":"\u003cp\u003eThis is the PoolTux ultra premium solid winter cover for 21 ft round above ground pools. The cover measures 25 ft round, so there is 4 ft of overlap past the pool wall, and it carries a 25 year manufacturer warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow it is built\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe cover is solid at 14 MIL with a commercial grade 14 x 14 scrim count and a heavy coating. UV inhibitors slow the damage that sun does to a cover left out through a long season. The underside is black, which is the part that matters most in spring: no light reaches the water, so algae has nothing to work with while the pool sits closed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eEdges and hold down\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe perimeter is fully bound with commercial grade material and thread, with a polypropylene cord sewn into a double stitched hem and non rusting aluminum grommets set along the edge. A vinyl coated steel lock down cable and a deluxe aluminum cable winch are included to pull the cover tight to the pool wall.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIn the box\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe round winter cover, the deluxe aluminum cable winch, the vinyl coated steel lock down cable and the warranty card.\u003c\/p\u003e","brand":"Pooltux","offers":[{"title":"Default Title","offer_id":48627731071188,"sku":"WC-AG-200002","price":113.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_f568b3ce-7d62-489c-b86b-cf9d34ae1d3b.jpg?v=1788727409"},{"product_id":"21-round-royal-solid-cover-bundle-with-15k-chemical-kit-and-4-x-8-air-pillow","title":"PoolTux Royal 21' Round Solid Winter Cover Bundle with 15k Chemical Closing Kit and 4' x 8' Air Pillow","description":"\u003cp\u003eThis is a closing bundle for a 21 foot round above ground pool. The cover measures 25 feet, which leaves a 4 foot overlap all the way around, and it comes with the hardware and chemicals needed to shut the pool down for the season.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe cover\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is a solid cover, 5 mil, made from triple laminated polyethylene in blue on black with heat sealed seams. A polypropylene cord is sewn into the edge to spread the load, and aluminum grommets are set every three feet for the cable. A deluxe aluminum cable winch and a vinyl coated steel lock down cable are supplied to draw it tight. The cover carries a 10 year warranty.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat else is in the box\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA 15k chemical closing kit treats the water as the pool goes down, and a 4 foot by 8 foot air pillow goes under the cover before it is secured. The pillow does two jobs over winter: it absorbs the pressure of expanding ice so the pool wall does not have to, and it crowns the cover so rain and melt water run to the edges instead of collecting in the middle.\u003c\/p\u003e","brand":"Pooltux","offers":[{"title":"Default Title","offer_id":48633783746772,"sku":"BUND-10054","price":160.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_94d53932-5d31-4ced-ba9f-92ff2db2e2e7.png?v=1788816291"},{"product_id":"21-mesh-round-winter-cover","title":"Pooltux Above Ground Pool Winter Cover 21' Round | MWC21","description":"PoolTux's finely woven mesh allows water to pass through while trapping leaves, twigs and other debris. Lightweight yet strong, these covers can be used year-round in moderate climates for day-to-day maintenance or can serve as a trap to help protect your winter cover.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e","brand":"Pooltux","offers":[{"title":"Default Title","offer_id":48647975993556,"sku":"MC-AG-100002","price":212.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/52732_0_2016913141941.jpg?v=1789036715"},{"product_id":"21-solid-round-winter-cover-15-yr-king-warranty-25-cover-size","title":"Cool Covers King 21' Round Above Ground Pool Winter Cover | 121225A","description":"\u003cp\u003eEmperor 21' Round Above Ground Pool Winter Cover | 121225A\u003c\/p\u003e","brand":"Cool Covers","offers":[{"title":"Default Title","offer_id":48648757117140,"sku":"GPC-70-7104","price":128.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/gpc-70-7104_1.png?v=1789667193"},{"product_id":"21-solid-round-winter-cover-15-year-king-warranty","title":"Pooltux Above Ground Pool King Cover 21' Round Silver | 1225ASBL","description":"Our heavy duty King Cover is an exceptional cover giving you greater longevity and excellent ware performance. Why not cover your pool for the winter rather than having to do all that messy cleaning in the spring? A PoolTux winter pool cover will prevent leaves, dirt, and debris from entering your pool this winter.\u003cbr\u003e\u003cbr\u003e","brand":"Pooltux","offers":[{"title":"Default Title","offer_id":48648807809236,"sku":"GPC-70-8204","price":84.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/round-winter-cover-silver_2.jpg?v=1789666695"},{"product_id":"king-21-round-above-ground-pool-winter-cover-101024au","title":"Cool Covers Unbound 21' Round Above Ground Pool Winter Cover | 101024AU","description":"\u003cp\u003eKing 21' Round Above Ground Pool Winter Cover | 101024AU\u003c\/p\u003e","brand":"Cool Covers","offers":[{"title":"Default Title","offer_id":48648863908052,"sku":"GPC-70-1204","price":82.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/101024AU.jpg?v=1789666598"},{"product_id":"21-rd-ag-leaf-guard","title":"Pooltux Above Ground Leaf Guards Winter Cover 21' Round | LN24A","description":"PoolTux's Leaf Guard covers are lightweight and strong. They prolong the life of winter covers by trapping and facilitating the removal of leaves and other materials.\u003cbr\u003e","brand":"Pooltux","offers":[{"title":"Default Title","offer_id":48649763881172,"sku":"GPC-70-6591","price":92.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/15463_0_20161010212955_3d0ca551-3528-4481-a109-6d81b43e4d0d.jpg?v=1789063610"},{"product_id":"21-solid-round-winter-cover","title":"Cypress Royal 21' Round Above Ground Pool Winter Cover | 7724AU","description":"\u003cp\u003eRoyal 21' Round Above Ground Pool Winter Cover | 7724AU\u003c\/p\u003e","brand":"Cypress","offers":[{"title":"Default Title","offer_id":48649882796244,"sku":"GPC-70-1104","price":62.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/40104_1_20108213339.jpg?v=1789067109"},{"product_id":"21-solid-round-winter-cover-20-yr-emperor-warranty","title":"PoolTux 21' Solid Round Winter Cover, 20 Yr. Emperor Warranty, BT0021","description":"\u003cp\u003eThe PoolTux BT0021 is an Emperor solid winter cover for a 21' round above ground pool.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe material\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is built from 8 mil black on tan triple laminated polyethylene with heat sealed seams. The edges carry a sewn in polypropylene cord for reinforcement, which is where the load concentrates once the cover is loaded with water and pulled at from every side through the winter. Aluminum grommets are spaced every three feet around the edge for the cable.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat comes with it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe cover ships with a deluxe aluminum cable winch and a vinyl coated steel lock down cable, so there is nothing else to buy to close the pool, plus a warranty card. A solid cover blocks light and debris and also collects rain and snowmelt, so it helps to keep a cover pump on hand for the closed season.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSizing and warranty\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOrder by pool size, not cover size. This one is listed for a 21' round above ground pool and the 25' figure is the cut size of the cover, including the 4 ft overlap. PoolTux backs it with the Emperor 20 year warranty.\u003c\/p\u003e","brand":"Pooltux","offers":[{"title":"Default Title","offer_id":50514989318356,"sku":"WC-AG-100002","price":122.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_af830969-be85-407c-affc-d266b9d42be7.jpg?v=1790016424"},{"product_id":"21-solid-round-winter-cover-10-yr-royal-warranty","title":"GPC 21' Solid Round Winter Cover, 10 Yr. Royal Warranty, 7725AGBLB","description":"\u003cp\u003eThe GPC 7725AGBLB is a Royal solid winter cover for a 21' round above ground pool. The cover measures 25' round, and the extra four feet is the overlap that lets the cable pull the cover down tight against the pool wall.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe material\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt is a solid cover, 5 mil blue and black triple laminated polyethylene, with heat sealed seams. A polypropylene cord is sewn into the edge for reinforcement, and aluminum grommets are spaced every three feet around the perimeter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat comes with it\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA deluxe aluminum cable winch and a vinyl coated steel lock down cable ship in the box, along with the warranty card, so there is nothing else to buy to close the pool.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe cover carries the GPC Royal 10 year warranty. Order this cover by the size of the pool it closes, not by the cover's own cut dimensions, since the 25' round figure already accounts for the 4 ft overlap.\u003c\/p\u003e","brand":"GPC","offers":[{"title":"Default Title","offer_id":50515046858964,"sku":"GPC-70-9104","price":73.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_0028c2ed-a630-4a40-bca1-8358e0937cee.jpg?v=1790016457"},{"product_id":"21-round-emperor-solid-winter-cover-bundle-with-15k-chemical-closing-kit-and-4-x-4-air-pillow","title":"PoolTux Emperor 21' Round Solid Winter Cover Bundle with 15k Chemical Closing Kit and 4' x 4' Air Pillow","description":"\u003cp\u003eThe PoolTux Emperor closing bundle for a 21' round above ground pool pairs a solid winter cover with a 15k chemical closing kit and a 4' x 4' air pillow.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe cover\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe cover measures 25' round, which gives a 4 ft overlap around a 21' round pool. It is 8 mil black on tan triple laminated polyethylene with heat sealed seams, and the edge carries a sewn-in polypropylene cord with aluminum grommets spaced every three feet. A deluxe aluminum cable winch and a vinyl coated steel lock-down cable are included to draw it tight around the top rail. It is backed by a 20 year warranty, with the warranty card included in the box.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eChemicals and the pillow\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe 15k chemical closing kit treats the water before the pool is shut down for the season, sized for a pool of about 15,000 gallons. The 4' x 4' air pillow floats under the cover in the middle of the pool. It takes up the pressure of ice expansion so that load does not push against the pool wall, and it crowns the cover so rain and snowmelt run off toward the edges.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eOrdering by pool size\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOrder this bundle by the size of your pool, not the size of the cover. This is the 21' round pool option, and the 25' round cover measurement is the 4 ft overlap built into it. A solid cover blocks light and debris, so rain and snowmelt will collect on top of it over the winter and a cover pump is still needed to clear that water off.\u003c\/p\u003e","brand":"Pooltux","offers":[{"title":"Default Title","offer_id":50515369296084,"sku":"BUND-10002","price":160.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_94b23e06-fe81-4455-828c-dba7cfa20e17.png?v=1790020793"},{"product_id":"21-round-ultra-premium-solid-winter-cover-bundle-with-15k-chemical-closing-kit-and-4-x-4-air-pillow","title":"PoolTux Ultra Premium 21' Round Solid Winter Cover Bundle with 15k Chemical Closing Kit and 4' x 4' Air Pillow","description":"\u003cp\u003eThe PoolTux Ultra Premium closing bundle for a 21' round above ground pool pairs a solid winter cover with a 15k chemical closing kit and a 4' x 4' air pillow. The cover itself is cut at 25' round, which builds in a 4 foot overlap past the pool wall so the cable has something to pull against once the winch is drawn tight.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe cover\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt carries a 14 x 14 scrim weave, at 14 mil, and PoolTux's heaviest coating, with UV inhibitors built in and a black underside meant to help keep the water under it clear. The hem is double stitched with a sewn-in polypropylene cord, the edges are bound in commercial grade material and thread, and two non-rusting aluminum grommets are set every three feet around the perimeter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWinch and cable\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eA non-rusting deluxe aluminum cable winch and a vinyl coated steel lock-down cable are included, threading through the grommets to draw the cover snug around the pool so wind cannot work it loose over the winter.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe kit and the pillow\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe 15k chemical closing kit treats the water for the season before the cover goes on. The 4' x 4' air pillow floats under the cover in the middle of the pool, taking the pressure of expanding ice off the wall and crowning the cover so rain and snowmelt run off instead of collecting in a pocket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSizing and warranty\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOrder by the 21' pool size, not the 25' cover measurement: the extra material is the built-in overlap, not a mistake. The cover carries a 25 year manufacturer warranty, and a warranty card ships in the box along with the winch, cable, kit and pillow.\u003c\/p\u003e","brand":"Pooltux","offers":[{"title":"Default Title","offer_id":50515381846228,"sku":"BUND-10016","price":161.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_25c09df5-1c5e-4891-bb35-8b088a11fab0.png?v=1790020821"},{"product_id":"21-round-king-solid-winter-cover-bundle-with-15k-chemical-closing-kit-and-4-x-4-air-pillow","title":"PoolTux King 21' Round Solid Winter Cover Bundle with 15k Chemical Closing Kit and 4' x 4' Air Pillow","description":"\u003cp\u003eThe PoolTux King closing bundle for a 21' round above ground pool pairs a solid winter cover with a 15k chemical closing kit and a 4' x 4' air pillow.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe cover\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe cover is 8 mil silver on black triple laminated polyethylene with heat sealed seams. Aluminum grommets are spaced every three feet around it, and a deluxe aluminum cable winch with a vinyl coated steel lock-down cable are included to draw the cover down tight against the pool wall.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSizing\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOrder by pool size, not cover size. This cover is cut at 25' for a 21' round above ground pool, which is what gives the overlap the winch and cable pull against. A solid cover blocks light and debris and collects rain and snowmelt over the winter, so a cover pump is worth keeping on hand.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe closing kit and air pillow\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe 15k chemical closing kit treats the water as the pool is shut down for the season. The 4' x 4' air pillow sits under the cover in the middle of the pool: it takes the pressure of expanding ice off the wall and crowns the cover so rain and melt water run off toward the edges instead of collecting in the center.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe cover carries a 15 year warranty, and a warranty card ships in the box with the rest of the bundle.\u003c\/p\u003e","brand":"Pooltux","offers":[{"title":"Default Title","offer_id":50515397804244,"sku":"BUND-10032","price":137.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0801\/9568\/2516\/files\/default_e6833c51-45bd-48e6-9a26-e770bc707e2c.png?v=1790020843"}],"url":"https:\/\/www.activepoolsupply.com\/collections\/21-ft-round-above-ground-winter-covers.oembed","provider":"Active Pool Supply","version":"1.0","type":"link"}