Enhanced Thermal Resistance: Class H winding insulation prevents premature burnout during continuous duty cycles

excluding VR8205S)

Shaft Compatibility: Specifically bored for standard 3/8-inch damper shafts to ensure a secure fit without play

Can I use an automatic reset switch in place of this manual reset model

Key Benefits Precise Thermal Calibration: Features a factory-set 290°F open and 210°F close range to ensure consistent furnace safety shut-off during flame rollout events

ZoneFirst SPRD-10 Damper Els PW 17895 Enhanced Thermal Resistance: Class HThe ZoneFirst SPRD 10 is a heavy duty 10 inch round barometric static pressure regulating damper engineered for bypass air management in multizone HVAC systems. Constructed from 22 gauge zinc plated galvanized steel, this mechanical bypass damper requires no electrical wiring, utilizing a single blade counterbalanced gravity design to automatically relieve excess duct static pressure. As individual zone dampers close, the SPRD 10 responds to the