Unicel 4CH-925 | 20 sq ft Strong Spas Filter Cartridge Type_Pellet Vent Pipe 1 x DuraVent 46DVA-FF Flat

1 x DuraVent 46DVA-FF Flat Roof Flashing

with chemical-resistant end caps and 2-1/8" openings top and bottom for a straightforward drop-in fit

and it gets to work

What’s in the box

Unicel 4CH-925 | 20 sq ft Strong Spas Filter Cartridge Type_Pellet Vent Pipe 1 x DuraVent 46DVA-FF FlatThe Unicel 4CH 925 is a compact 20 square foot top load replacement cartridge for select Strong Spas and Futura Antigua models. At just 7 1 4" tall and 4 5 8" across, it is one of the smallest threaded cartridges Unicel builds and it packs 190 pleats into that short body, the densest fold per inch of any cartridge in its diameter class. The bottom carries an injection molded 1 1 2" SAE thread, with a semi circular handle across the closed top. Molding