What size to install pool cover for Below Ground Box?

Install the pool cover to maximum water line size then test operation of BGB. The pavers over the edge of the pool can catch the sides of the pool cover acting like a brake. This is of no concern for normal above ground rollers as the roller is picking up, or pulling the cover up and out of the pool. With the BGB’s the cover is being pulled along the ground, meaning the edges are being pulled into the corners not out of them.

Simply trimming the pool cover narrower, to the coping opening size will fix the problem

Note: Square pools and pools with non-round paving generally will ‘grab’ the cover more

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