Five Oceans Rectangular Louvered Air Ventilators, 10 1/4" Black/White Type: Rectangular Louvered Material: Injection-molded ABS Plastic Inside Dimension: 3 11/16" (94mm) Height x 9"(229mm) Width Outside Dimensions: 4 7/8" (124mm) Height x 10 1/4" (260mm) Width Color: Black Type: Rectangular Louvered Material: Injection-molded ABS Plastic Inside Dimension: 3 11/16&#034; (94mm) Height x 9&#034;(229mm) Width Outside Dimensions: 4 7/8&#034; (124mm) Height x 10 1/4&#034; (260mm) Width Color: Black Fasteners: #8 FH (Not Included)