This is an AquaStar 4 inch slip x 4 inch slip x 2-1/2 inch slip horizontal tee with two 4 x 3 inch reducer bushings. This tee has a universal fit for AquaStar skimmer bottoms and “B” dual-port PVC sumps. It converts two 2-1/2 inch spigot to 4 or 3 inch tee.
The horizontal tee comes complete with two 4 x 3 inch reducer bushings. And this item is constructed of white Schedule 40 PVC. Materials are NSF approved.