EnergyRite II Low Water Cut-Off With Manual Reset pool-dimensions_21x41 They have a gate gap

They have a gate gap variance range of 5/8 to 1-11/16 inches

This is a Pentair 2 inch Bulkhead Nut for Nautilus and Nautilus Plus Filters

040 mil Styrene Plastic and is designed to prevent patrons from entering the pool without showering sand off first

This is an RSW Series stainless steel pool strainer that reduces flow with a 6 x 4 Inch flanged connection

is item #AQ5006 (sold separately)

EnergyRite II Low Water Cut-Off With Manual Reset pool-dimensions_21x41 They have a gate gapThis is a Lochinvar Low Water Cut Off with Manual Reset for the EnergyRite II pool heaters. This item replaces part numbers WTR2530 and WTR2530K.