· Flow Measurement Accuracy +/- 5%
· Linear Response Flow Control
· 4inch Duct Diameter
· Quiet, Low Self-Generated Noise Characteristic
· Compact Design Allows for Simple Installation
· Each Damper Comes with Permanent Pressure Taps
· Airtight Construction with Integral Gaskets for Duct Connection
· Internal Aperture Opens Fully to Allow Duct Cleaning without Dismantling
· Five Year Warranty
· Weight: 2
· Dimensions: LxWxH:8x7x6