18 x 40 ft Oval Winter Covers for Above Ground Pools

An 18 x 40 ft oval pool takes a 21 x 45 ft oval cover; the extra is the overlap that drapes over the top rail. Covers labeled 18 x 41 ft fit this pool too.

3 covers available
More covers for a 18 x 40 ft oval pool 3 out of stock

Questions about this size

What size winter cover fits an 18 x 40 ft oval above ground pool?

A cover labeled for an 18 x 40 ft oval pool. It is cut 21 x 45 ft across, depending on the brand: Swimline cuts it 21 x 45 ft. Each card shows its own cover size.

My cover is labeled 18 x 41 ft. Is that the same pool?

Yes. Brands label the same oval pool differently, and those covers leave at least 3 ft of overlap on an 18 x 40 ft oval pool, so they are listed here together.

What size air pillow for an 18 x 40 ft oval pool?

The pillow sizing chart we follow recommends a 4 x 15 ft pillow for an 18 x 40 ft oval pool; we carry the 4.5 x 15 ft. It sits under the center of the cover and takes the push of the ice off the walls.

What kinds of covers are there for an 18 x 40 ft oval pool?

For this size: solid covers and a leaf net. The buttons above the covers show one kind at a time.

Other oval sizes

Select pool size

12 ft x 18 ft oval12 ft x 20 ft oval12 ft x 24 ft oval15 ft x 24 ft oval15 ft x 26 ft oval15 ft x 30 ft oval16 ft x 25 ft oval16 ft x 32 ft oval18 ft x 34 ft oval18 ft x 36 ft oval18 ft x 38 ft oval18 ft x 40 ft oval21 ft x 41 ft oval21 ft x 43 ft oval
All above ground winter covers, round and oval