Watts 757-BFG 2 1/2 - Part of the 757 Series ZA100F-2NH TerraTex® OL-I is a nonwoven

TerraTex® OL-I is a nonwoven geotextile made up of polypropylene fibers

Compatibility: For use with ThermalMAX Series Roof Hatches

5 Inch thermostat length

ZN400H-3NH

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Watts 757-BFG 2 1/2 - Part of the 757 Series ZA100F-2NH TerraTex® OL-I is a nonwovenThis 2 1 2 inch lead free double check valve backflow preventer assembly is designed to prevent the reverse flow of water of non potable quality from being pumped or siphoned into the potable water supply due to backsiphonage and or backpressure in accordance with national plumbing codes and water authority requirements. It is ideal for protection at cross connections identified as non health hazards and from other contaminants found at the service