• Mechanical visual position indicator for damper status Solid construction using extruded aluminum frame and blades Parallel blade design for low leakage performance Reliable, strong, 24 V spring return motor Fail safe, normally open operation Ordering instructions - order ZD (dimensions 1) x (dimensions 2), (motor is always mounted on dimensions 2 side) for example, ZD10x8 is a 10 x 8 in damper with the motor on the 8 in side, but a ZD8x10 is an 8 x 10 in damper that has the motor on the 10 in side Damper can be installed in any orientation Motor or actuators mounting, side or top 30 s power closed/10 s spring return 90 deg angular rotation

The ZD is a power close and spring open damper. It has a 24 V motor used to control circulating air-in HVAC systems and used when a normally open damper is required. The ZD is typically used with the TrueZone® and other electronic zoning systems.