Compatibility: These heavy duty pool filter parts secure secure, leak Easy installation for your pool filtration Systems, perfectly fitting models like 170029, CCP 320, CCP 420, CCP 520, and FNSP series for optimal High Efficiency Debris Blocking: Effectively replaces damaged or dirty 190106Z covers with fine stainless steel Meshing that acts as a Stable barrier against small debris and dirt entering pipes, protecting internal mechanisms Easy 4 Step Installation: Replace old pool filter parts in minutes by simply turning off the Pumps, releasing Tanks pressure, cleaning hoses, and installing the new filter cap ( protective gloves recommended for added Strong Component: Unlike standard covers, our upgraded internal vented filter features a flexible rubber body and rust proof stainless steel Meshing, providing seal sealing and long lasting durability for pool filter components 2 Pack Value: Includes two 190106Z filter caps for future maintenance, with dimensions of 0.86 " Inner diameter, 1.18 " Outer diameter, and 1.4 " Height—verify sizing with your existing equipment before purchase