Fantech Mounting Clamps FC 12, 12" Duct, 2/Box

The IR is an iris damper for measuring and adjusting the air flow. The IR has the following specifications: low noise level, centrically-formed air flow and fixed test points for precise measurements. The damper also has an adjustment aperture which can be opened completely, which means there is no need for an access door for cleaning. Available in sizes 4-25 inches.

Easily-fitted silencer for circular ducts, fitted with a connection which is compatible with a standard spiral duct. The LD effectively reduces noise in the duct. Two silencers can be used together in installations where noise reduction is critical. For the most effective noise reduction, the silencer should be fitted immediately behind a fan or bend.

Manufactured from 19-gauge galvanized steel frame 2" deep with 1" flange. For quiet operation aluminum blades have felted edges. Pre-punched conduit hole knock-out. Class 1.

Backdraft damper for circular ducts, manufacturedfrom galvanized sheet metal. The two bladesare spring-loaded. Every damper is built with performance in mind. The damper can be mountedvertically.

Bracket/Hardware For Boss Plexiglass Panel. Top Mounting. Ideal for Table and Desk Mount Protection. 2 pieces per set. Mounts to partition tops between 1.575" to 2.48" thick.