Tamarack Technologies Tamarack Technologies 12 Inch Tall Acoustic Plenum Box for use with Fan Models TTi-HV1000 and TTi-HV1600

Features:Tamarack's Acoustic Plenum Riser Box acts as a muffler to drastically reduce sound levels produced by a whole house fan Use this plenum box in conjunction with Tamarack's whole house fans for a quiet ventilation solution Designed to fit between attic floor joist measurements ranging from 16-24 inches to save you from joist cuttingConstructed from 20 gauge galvanized steel for a high quality durable product that is built to lastRaises fan 12 inches from the attic floorFor use with model numbers T...