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the 43" leads provide ample length for secure routing to the terminal box
Standard practice dictates matching the 3000 RPM specification exactly to ensure the pressure switch closes correctly and flue gases are moved at the factory-designed velocity
provided the shell size matches the 1-1/8 inch specification
Smith storage tanks and boiler headers
ZoneFirst AOBD-20X10 Damper 318423-701 the 43" leads provide ampleThe ZoneFirst AOBD 20X10 Damper is a professional grade automatic opposed blade damper engineered for precision bypass and zone control in high demand residential and commercial ductwork. This 20" wide by 10" high unit features an anodized extruded aluminum frame and blades, ensuring a low profile footprint that fits into 3 inch slots for streamlined side mount installation. Each blade is connected via a stainless steel draw bar and nickel plated