1" wide rail that has true measurements of 7/8" wide, 3/4" tall and 55 3/4" long (not measuring curvature). Fits 27' round pools.
This part can be interchanged with 5/8" rails (part #1627) but you must also replace all of the joints on your pool to accommodate 5/8" rails. If this part is out of stock, you will not have trouble using part #1824 or #1830 instead because the curvature is very similar.
