Pentair Grid Element, Quad DE 100, 4 Required | 178656Z C9403 These are the interior steps

These are the interior steps only

with step-by-step

Fits Hayward Front Access swimming pool skimmer SP1090

Add 32 fl oz per 10

1-1/2 Inch Slip

Pentair Grid Element, Quad DE 100, 4 Required | 178656Z C9403 These are the interior stepsNote, these are sold in singles. There are four cartridges per Quad DE Filters (order 4, to replace all cartridges). This cartridge is designed to use with the Pentair Quad D. E. filter model Quad 100. The straight, sharp and evenly spaced pleats create an efficient design for capturing and holding dirt. This filter features polyurethane end caps for strength and to create a proper seal in the filter. There are evenly spaced holes in the center core