Constructed of impact-resistant, injection-molded ABS, this louvered vent is designed to be used in conjunction with a collector box to facilitate air intake and exhaust. Interchangeable with Attwood vent model #1494. Ventilator easily installs with 8 FH fasteners (not included). Note: Avoid contact with acetone or strong solvents. 13-1/4"L x 4-3/4"W. Requires 12-1/8"L x 3-5/8"W cutout.