8" X 4" STEEL/WHITE STEEL BLADE ADJUSTABLE REGISTER, STEEL CONSTRUCTION, ADJUSTABLE STEEL ROLL FORMED BLADES ORIENTED FOR 1 OR 2 WAY AIRFLOW PATTERN, LEVER OPERATED STEEL MULTI-SHUTTER DAMPER, FOR CEILING OR SIDEWALL APPLICATIONS, ROUGH OPENING DIMS:4"W X 8"L, DIMS:1 1/4"H X 5 7/8"W X 9 7/8"L, WEIGHT:1 LB 8 OZ, BULK, MADE IN UNKNOWN