
- Cover size
- 21 x 45 ft
- Pool size
- 16 x 38 ft
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A 16 x 40 ft inground pool takes a 21 x 45 ft cover. The extra is the overlap, 2.5 ft on every side, and it laps onto the deck where the water tubes hold it down. The covers for this size are sold as 16 x 38/40, one cover cut for both pools, and the covers cut for a larger pool that still work here are under Also fits.


These are cut for a larger pool but still work here. Each card shows the overlap it leaves on the sides and on the ends, so you can check it against your deck.



















A 21 x 45 ft cover, the pool plus 5 ft, with 2.5 ft of overlap on every side. These are sold as 16 x 38/40, one cover cut for both pools.
17 tubes of 8 ft, or 14 of 10 ft. The 21 x 45 ft cover is 132 ft around its edge, and the tubes lie end to end along that, on the deck.
A 23 x 45 ft cover leaves 3.5 ft on the sides and 2.5 ft on the ends. A 25 x 49 ft leaves 4.5 ft all round, and a 25 x 50 ft leaves 4.5 ft on the sides and 5 ft on the ends. They are grouped under Also fits.
With a solid cover, yes. It has no way to shed rain and snowmelt, and the weight of standing water drags the cover into the pool. A mesh cover drains into the pool instead and does not need one.
No. Water tubes hold the cover down, and neither they nor the cover is a safety device. Never substitute bricks or blocks: they tear the cover, and they go into the pool with anyone who falls in.