Ventmate Refrigerator Vent Lid. Polar white color. Made of high impact plastic. UV stabilized. This is a direct replacement lid for Dometic new style refrigerator vents. Screw hole spacing measures approximately 21-11/16” by 4-1/2”. The overall dimensions of the cover are approximately 27-1/4” by 11”. Distance between mounting holes (center to center): 21-5/8" length, 4-3/8" width.