Ruskin FDR25 is a true round fire damper designed for use in fire rated walls and floors in either Static or Dynamic systems. The damper is rated for maximum velocity of 2,000 fpm (10.2 m/s) and 4” w.g. (1 kPa). The integral frame and unique “cinch plate” design provides a low cost, high performing damper. The FDR25 has UL approval for plate on one-side of metal stud or concrete walls. The FDR25 is the ideal choice when round duct is used on a project, arriving at the job site with everything required to install the damper. Brand new and never used or installed. Damper and cinch plate ship via USPS, Fedex or UPS.
eBay