Inquiry (采购产品): gravity damper/louver we have a project that will require wind and impact resistance protection for the devices to be installed in the wall openings (3) 4' x 6' to stand-by generator rooms. a fire/smoke damper shall be installed on the interior of the louver **** Hidden Message ***** gerald heavner 33317 Company: elite service systems, inc. E-mail: jheavner587@bellsouth.net **** Hidden Message ***** jheavner587@bellsouth.net
