12" x 18" Tombstone or
Elliptical Gable Vent
![](https://pinterest.com/pin/create/button/?url=https://www.kimballdesigns.com/12x18tombstone.html&media=https://s.turbifycdn.com/aah/kbdesign/12-x-18-tombstone-cedar-gable-vent-16.jpg&description=12" x 18" Tombstone or<br>Elliptical Gable Vent "Pin It")
Product Description
PVC, Wood, Cedar, Cypress, Pine Tombstone gable vents
The “stated size” is the “Rough Opening.”
Net Free Area: aprox. 41.77"
Louver Box measures:11 1/2" x 17 1/2"
The overall outside of trim measurement:
with the 3/4" x 2 3/4" SE : 15 1/2" x 21 1/2"
with the 1 1/8" x 2" BM : 14" x20"
Standard louver box depth: 3"
The “stated size” is the “Rough Opening.”
Net Free Area: aprox. 41.77"
Louver Box measures:11 1/2" x 17 1/2"
The overall outside of trim measurement:
with the 3/4" x 2 3/4" SE : 15 1/2" x 21 1/2"
with the 1 1/8" x 2" BM : 14" x20"
Standard louver box depth: 3"