X-Tra Air™ vent Cover

X-Tra Air™ vent Cover. X-Tra Air™ unique structure is designed to allow 20% more air flow, then that of the traditional roof vent cover. Protecting your R.V.'s interior from nature's elements while your roof vent remains open. This durable, UV ray protected cover will mount over most popular 14X14" roof vents. 19L x 8-1/2" W x 9-1/2" Tall.