TEMP VENT Brand Foundation Crawl Space Vent Automatic Open/Close 8″X16″ Lot Of 4
Standard size : Fits regular 8″ x 16″ crawl space brick or block openings (actual size roughly 7¾” x 15½”). Vent features a heavy duty coil for dependable operation. Corners : Place a vent within 3 feet of each corner to avoid dead air spaces.