Camco's Retractable RV Vent Shade blocks out sunlight, moonlight and streetlights from your RV's ceiling vent. It easily mounts to the ceiling and retracts into a space-efficient housing to allow light inside during the day. Opens to 14 1/8-inches wide x 19-inches long. The vent shade is constructed of solid vinyl and weighs 5 ½-ounces. It is cream colored to match most RV interiors. The reflective finish reflects heat to keep your RV cool. Mounting materials provided.