Tjernlund 950-8304 Underaire Steel Crawl Space Vent, Steel Diamond Pattern, 18" x 10" Screen

Tjernlund V2D Model UnderAire Crawl Space Fan Ventilator, Deluxe 2 Fan, 220 CFM

Durablow Stainless Steel 304 Crawl Space Foundation Dual Fans Ventilator + Built-in Dehumidistat, 220 CFM (Model: MFB M2D)

Elite-Air FAT2 220 CFM Dual Fan Crawl Space Ventilator With Dehumidistat M2D

Tjernlund V1D UnderAire Crawl Model Space Ventilator Fan, 110 CFM

Durablow Stainless Steel 430 Crawl Space Foundation Dual Fans Ventilator + Built-in Dehumidistat, 220 CFM (Model: MFB M2D-S430)

Energy Efficient Crawl Space Vent

Witten Automatic Vent B-EBLACK(MB) "Energy-Saver" Foundation Auto Vent 8" X 16"- Black

Crawl Space Vent Cover Outward Mounted 18"L x 10"H | Mounts Over Foundation Vent Opening

Tjernlund V1 Model UnderAire Crawl Space Fan Ventilator, 110 CFM

Hubbell-Bell PSB37550GY Weatherproof Box with Gang, 1/2-Inch or 3/4-Inch Outlets, Gray