This Royal Blue/Black cover is made for 18 foot round above ground swimming pools and is made of triple layered polyethylene with with heavy duty UV inhibitors. It's thick material prevents tears and rips from winter season to winter season.
Aluminum Grommets made of non-rusting materials to withstand weather elements such as snow and rain. Two grommets are placed every three feet to ensure a tight fit to your pool. Heat Sealed seams have a sewn-in polypropylene cord for added reinforcement.
Includes a Vinyl Coated Steel Lock-Down Cable to secure cover to pool all season long.
The 4 ft overlap is plenty for securing cover with a cable. Also Includes a non-rusting deluxe aluminum cable winch to secure cable to swimming pool tightly to ensure a watertight seal.
Air pillow is 4 x 4 foot to ensure cover stays separated from water to prevent freezing.
The pillow also prevents cover from holding water, snow, or debris on the top. When your pool water freezes, Air pillow absorbs freezing water and compresses to relieve the stress and pressure from the walls of your above ground pool.
It also lifts your winter pool cover out of the water to prevent it from freezing in the water and to protect it from tearing, helping it last as long as possible.
Inflate pillow halfway to allow for expansion in freezing conditions.
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