Made To Order usually ships in 2-3 Weeks
3-Dimensional Vents Will be the Exact Size That is Ordered. They Are 2-3/4" DEEP and 4" Tall. They Have a 3/4" Projection From the Wall at the Top. Example: 4 X18 Vent Will be 4" Tall X 18" Long.
Vents must be sealed on all sides