Pentair Max-E-Therm 333 Air Orifice Kit (77707-0112) gfci and this generic version uses

and this generic version uses the O-101 reference

Supports easier routine service and better pump protection

Pool Tool part 112S for easy ordering

5 HP applications and is used when the original seal plate area is worn

and installation style before purchase

Pentair Max-E-Therm 333 Air Orifice Kit (77707-0112) gfci and this generic version usesKeep the repair centered on the right component with this Max E Therm 333 Air Orifice Kit. It is used in the heater combustion system to help meter the air path for the correct burner configuration. Because orifice sizing affects how the heater breathes and fires, this is a precision replacement part rather than a generic fitting. Before installation, verify part number 77707 0112, equipment series, and any size or voltage details shown in the product