This part fits on 10" frames. This is the newer style of joint which utilizes a 5/8 inch rail (or track). It measures 9" 5/8" wide by 4" 5/8" deep. This is a lower joint.
THIS PART ONLY WORKS WITH 5/8" RAILS. If you buy this part, do NOT purchase 1" rails. If you are not certain, measure the rails on your pool. If they are 7/8", they are considered 1" rails. If you need an upper joint that uses 5/8" rails, you should purchase part number 2192.
