Pentair Air Orifice Kit | MasterTemp 400 | 77707-0113 Pool Winter Covers The 7CH-322 measures 7" OD

The 7CH-322 measures 7" OD and 8" length

How to Use Pool Refresh Water Moisturizer

then apply a thin

Its 185 pleats of 4 oz

over-circulating water and wasting precious energy and money

Pentair Air Orifice Kit | MasterTemp 400 | 77707-0113 Pool Winter Covers The 7CH-322 measures 7" ODThe Pentair Air Orifice Kit (77707 0113) is the OEM replacement air orifice assembly for the MasterTemp 400 gas heater, covering both natural gas (400NA) and liquid propane (400LP) configurations. IMPORTANT: KIT LISTING INCLUDES ITEMS 6 AND 7 This listing is a kit, not a single orifice. It includes Item Nos. 6 and 7 from the MasterTemp 400 exploded parts diagram. Confirm both components are required before ordering. IMPORTANT: HEATER COMPONENT