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The M&M Manufacturing 503ATH8 Air Tite Starting Collar Less Damper is designed for efficient air distribution in ventilation systems
Vent pipe diameter of 4 inches
Insulated to prevent heat exchange
Used On Item Power Direct Vent Residential Gas Water Heater
Includes a control panel
Soval 826-160 16" Ductile Iron Swing Check Valve w/ Lever and Weight Flanged Ends voomi_id_11979 The M&M Manufacturing 503ATH8 AirSoval 826 160 The 16" Ductile Iron Swing Check Valve w Lever and Weight Flanged Ends is the only ductile iron weighted swing check valve you need for your waterworks, fire protection, well water, irrigation, sewage, industrial and plumbing flow control needs. Eiminate that water hammer! High quality build, long lasting performance and great customer service is what has kept in business for over 50 years and we look forward to serving you into the far
