

Open Box Swimline Hydrotools Guard Winter Cover for 21' Above Ground Round Pool
Key item features
- Winter pool cover is designed to protect traditional above-ground swimming pools during the winter season to increase pool longevity
- Suited for 21-foot round-shaped pools but measures 24-foot, leaving plenty of overlapping to ensure a good fit
- Supreme line features a solid 12 x 12 scrim thread count material, ensuring no water or debris passes through during the winter season, while being UV resistant
- Featuring perimeter attachment grommets and a tight, durable design, this winterizing pool cover is super easy to install
- Comes with a steel cable and a winch, so it's ready for installation right out of the box
- Swimline cover should naturally float loosely on the water; if you have large top rails, consider going up a size
- Tighten the cover so it feels secure around your pool without feeling overstressed
- Pair perfectly with Swimline's wide range of ice equalizer air pillows, water tubes, and wall bags (sold separately)
- Color: Green
- Product Condition: Open Box – Like new
- Product Warranty: 30-day VMInnovations warranty
Specs
- Pool size21 ft
- Pool cover typeWinter Pool Covers
- ShapeRound
- Pool typeAbove-Ground Pools
- MaterialWoven
- FeaturesUV Resistant
- Free shipping
Free 30-day returns
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About this item
Product details
- Winter pool cover is designed to protect traditional above-ground swimming pools during the winter season to increase pool longevity
- Suited for 21-foot round-shaped pools but measures 24-foot, leaving plenty of overlapping to ensure a good fit
- Supreme line features a solid 12 x 12 scrim thread count material, ensuring no water or debris passes through during the winter season, while being UV resistant
- Featuring perimeter attachment grommets and a tight, durable design, this winterizing pool cover is super easy to install
- Comes with a steel cable and a winch, so it's ready for installation right out of the box
- Swimline cover should naturally float loosely on the water; if you have large top rails, consider going up a size
- Tighten the cover so it feels secure around your pool without feeling overstressed
- Pair perfectly with Swimline's wide range of ice equalizer air pillows, water tubes, and wall bags (sold separately)
- Color: Green
- Product Condition: Open Box – Like new
- Product Warranty: 30-day VMInnovations warranty
What is the Walmart Pre-Owned Program?
Walmart Pre-Owned allows you to find previously owned, well-cared-for items from Walmart’s trusted & performance-managed sellers. Shopping Pre-Owned allows you to bring home the best-quality picks at even lower prices, in addition to extending the life of an item & reducing waste. Find your favorites & shop a range of conditions in every category.
Why Walmart Pre-Owned?

Trusted sellers & quality items
Each Pre-Owned item listed comes from Walmart’s trusted performance-managed sellers, to ensure you get quality items.
Quality you can afford
Save even more on top brands & your most-loved items.

30-day free returns
Don’t love it? Most items offer a 30-day* free return policy, for added peace of mind.

Sustainability
Shopping Pre-Owned helps in extending the life of an item & reducing waste.
Product image for illustration purposes only. The item you receive may vary from the image in minor ways, such as slight differences in appearance, color, and/or design. *Exceptions apply during holiday season, and on certain electronics, collectibles, and jewelry.
What is Open Box ?
What is the Walmart Pre-Owned Program?
Walmart Pre-Owned allows you to find previously owned, well-cared-for items from Walmart’s trusted & performance-managed sellers. Shopping Pre-Owned allows you to bring home the best-quality picks at even lower prices, in addition to extending the life of an item & reducing waste. Find your favorites & shop a range of conditions in every category.
Why Walmart Pre-Owned?

Trusted sellers & quality items
Each Pre-Owned item listed comes from Walmart’s trusted performance-managed sellers, to ensure you get quality items.

Quality you can afford
Save even more on top brands & your most-loved items.

30-day free returns
Don’t love it? Most items offer a 30-day* free return policy, for added peace of mind.

Sustainability
Shopping Pre-Owned helps in extending the life of an item & reducing waste.
Product image for illustration purposes only. The item you receive may vary from the image in minor ways, such as slight differences in appearance, color, and/or design. *Exceptions apply during holiday season, and on certain electronics, collectibles, and jewelry.
