Dryerbox DB-480 - Dryer Box by In-O-Vate Technologies 22 Gauge Aluminized Steel Weighing 7 Pounds Each. Top Port Measures 4 5/16" With Very Slight Oval Shape. Distance from Nailing Flange to Rear of Box is 4 1/4". OD 23 1/2" h x 17 3/8" w x 5 1/8" deep. Receiving Area 14" wide x 20 1/2" tall.