Zonefirst ZDS-30X8 30WX8H Parallel 24V 2-Pos S/R R-410A This unit features an 11

This unit features an 11 7/8" diameter and an 8 1/8" width

When performing a furnace gas valve replacement

Common Questions What models are compatible with the 383-500-620 kit

making it a standard replacement for Lochinvar boiler maintenance

Common Questions Is this TXV compatible with R410A systems

Zonefirst ZDS-30X8 30WX8H Parallel 24V 2-Pos S/R R-410A This unit features an 11The Zonefirst ZDS 30X8 is a professional grade HVAC zone damper engineered for side mount applications in rectangular ductwork. Featuring a parallel blade design, this 30"W x 8"H unit utilizes a 24V motor that operates in a 2 position power close, spring return configuration. Built with a sturdy extruded aluminum frame, the ZDS 30X8 ensures silent operation with its 3 inch blades pivoting on self lubricating bushings. This spring return damper is