Five Oceans Louvered Slotted Ventilators, 13 1/4" White & Black Dimensions: 13 1/4" (336mm) L x 4 3/4" (121mm) W x 1 1/16" (27mm) H Cutout Size: 12" (305mm) x 3 1/2" (89mm) Mounting hardware: #8 FH Screws (not included) Material: ABS Plastic Color: White Dimensions: 13 1/4&#034; (336mm) L x 4 3/4&#034; (121mm) W x 1 1/16&#034; (27mm) H Cutout Size: 12&#034; (305mm) x 3 1/2&#034; (89mm) Material: ABS plastic Mounting hardware: #8 FH screws (not included) Color: White