G4 Dual Durometer Disc pool-dimensions_18x40 Van-Stone Flanges and heavy-duty 316

Van-Stone Flanges and heavy-duty 316 stainless basket (1/8 inch perforated)

This is a Hayward Drain Cap Assembly used with the Pro Series Filters Models S270T2

Millivolt/Electronic ED1 Style Heater and H250IDL2/H350IDL2/H400IDL2 Heaters

This is a Hayward Replacement White Pressure Cleaner Dirt Bag for Poolvergnuegen 2-Wheel and 4-Wheel Pool Cleaners

Note: the disk must be kept flat between tests so water in the disk from previous test doesn't migrate into the untested wells

G4 Dual Durometer Disc pool-dimensions_18x40 Van-Stone Flanges and heavy-duty 316This is a Zodiac W83277 Dual Durometer Disc for Baracuda G4 Pool Cleaners.