Top 10 Crawl Space Vent – Household Ventilation Fans

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1. Durablow


Durablow MFB M2D-S430 Air-Out Stainless Steel 430 Crawl Space Foundation Dual Fans Ventilator + Built-in Dehumidistat + Freeze protection Thermostat + Radon Mitigation

Durablow #ad - It helps to reduce radon level in crawl space, since radon density is heavier than air, radon will precipitate in lower floors. Built-in dehumidistat 20% - 80% rh range. Air out ▼ dimensions l x w x h: 18" x 9" x 2".

Benefits: 1. 100% stainless steel 430 Grade panel & housing box for longer life in humid environment. Reduces moisture in crawl spaces / foundation to protect home and occupants. Seven leaves AC Axial Fan. Exhausts vent radon gas, treated wood gases and odors, prevents migrating into living areas. Better than other brands' Galvanized Steel. 4. 3. Measure your crawl space vent opening size before purchasing. On/off automatically with SET humidity % level. Exchange the outdoor and indoor air, improve room air quality and balance the humidity. 5. Ul listed components used. Youtube Video: https://youtu. Be/abtaau2J6Ec.
BrandDurablow #ad
ManufacturerDurablow #ad
Height2 Inches
Length18 Inches
Weight6.17 Pounds
Width9 Inches
Part NumberMFB M2D-S430
ModelMFB M2D-S430

2. Speedvent


Foundation Crawl Space Vent Cover

Speedvent #ad - 19. 99 for one vent. In, anodized, metal screen, no rust issue, install with 6 screwsnot included or silicon. Size- 16"x8"x1/2" made of abs paintable open area 38. 2 sq. Made according to 2012 international Residential Code, Chapter 4, Section R408.
BrandSpeedvent #ad
ManufacturerSpeedvent #ad
Part Number735495

3. Crawl Space Door Systems


FEMA Compliant Engineered Crawl Space Flood Vent, Wall Mounted Black 8" Height x 16" Width

Crawl Space Door Systems #ad - Engineer certified. Engineered certificates included in the box for the following states: al, la, sC, RI, PA, GA, tn, MS, ME, DE, NJ, fl, CA, ct, ma, NC, co, TX, MD, VA.

Flood vent is a fixed-louvered vent remains open with vermin screen. Opening within the frame is 8"x16". At least two vents required to be FEMA compliant. Fema compliant. Flood vents may help lower your flood insurance premiums! Also works great on garages, sheds, etc. Durable abS/UV treat plastic. Protects your foundation from rising floodwaters: 205 square feet of coverage per vent. No rust or rot! Surface mounted over the foundation opening. Total dimensions = 11"x19".
BrandCrawl Space Door Systems #ad
ManufacturerCrawl Space Door Systems, Inc. #ad
Height19 Inches
Length11 Inches
Weight1 Pounds
Width1.5 Inches
Part Number816CSFV

4. Tjernlund


Tjernlund V2D UnderAire Crawlspace Ventilator Fan Moisture Mold Reducing,220 CFM

Tjernlund #ad - Power ventilate musty, damp crawl spaces through existing passive vents. Includes adjustable dehumidistat, freeze protection limit and 6 foot grounded power cord. 220 cfm, 40 watt maintenance free exhaust fans. Faceplate is sized for ventilation openings through standard block foundations. Faceplate can be trimmed to match non-standard foundation openings. Dehumidistat control also will not operate if the freeze protection thermostat senses low outdoor temperatures.
BrandTjernlund #ad
ManufacturerTjernlund #ad
Height4 Inches
Length20 Inches
Weight0 Pounds
Width11 Inches
Part NumberV2D

5. Air Vent


1-Qty, Brown, Air Vent RABR Heavy-Duty Automatic Foundation Vent, 50"

Air Vent #ad - Convenient and easy to use. Durable and long lasting. Designed to work effectively. Country of Origin: United States. Included components: Brown Auto Vent.
BrandAir Vent #ad
ManufacturerAIR VENT INC. #ad
Height4.2 Inches
Length17 Inches
Width9.5 Inches
Part NumberRABR

6. RaZair


RazAir Foundation Crawl Space Vent Cover 16"x6.5"

RaZair #ad - Layer of mesh screen acts as ember inhibitor & keeps insects out. Damper may be kept open to provide ventilation to the crawl space or in times of severe weather, easily closed. Paintable ABS plastic with ultraviolet inhibitors. Size 16" x 6. 5". The razair home vent made in USA has been a proven product since it was introduced in 2000 .
BrandRaZair #ad
ManufacturerHome Ventilation Products LLC #ad

7. Tjernlund


Morning Star Pattern, Tjernlund 950-8303 UnderAire Steel Crawl Space Vent, 18" x 10" Screen Vent Screen Only

Tjernlund #ad - Mounting Hardware Included. Install from Outside or Inside of Crawl Space. Sturdy galvanized Steel Construction Increases Product Durability and Lifespan. 18" x 10" to cover block Foundation Wall Openings. Professional modern Decorative Designs with Over 80% Open Area.
BrandTjernlund #ad
ManufacturerTjernlund #ad
Part Number950-8303

8. Crawl Space Door Systems


8" Height x 16" Width, Manual Crawl Space Vent with Removable Cover and Vermin Screen Black

Crawl Space Door Systems #ad - Almost double the amount of other air vents. Great for ventilation and encapsulations. Quit replacing crawl space vents year after year! Total dimensions with mounting flange: 11" height x 19" width. Nfa net free airflow: 95 sq inches. Designed for: 8" height x 16" width foundation openings. Will not rust or rot. Built to last: save money. Durable: made of durable ABS plastic that is also paintable. Installation hardware included.
BrandCrawl Space Door Systems #ad
ManufacturerCrawl Space Door Systems, Inc. #ad
Height11 Inches
Length19 Inches
Weight2 Pounds
Width2 Inches
Part NumberCECOMINOD078542

9. Crawl Space Door Systems


Outward Mounted Black, 10" Height x 18" Width, Crawl Space Vent Cover

Crawl Space Door Systems #ad - Mounts over the opening. Solid abs plastic vent cover: Won't rust or rot! Does not go into the opening. Surface mounted: attaches to outside of crawl space foundation wall over 8"x16" openings with screws or adhesive not included.

Installation: designed to be mounted over standard 8" height x 16" width crawl space openings. Screw directly into foundation wall with a 1/4" masonry bit or construction grade adhesive. Crawl space vent cover can be insulated by gluing insulation inside the cover. Paintable: may be painted with a plastic adherent paint. Does not open or close: This is a solid piece vent cover for enclosed, encapsulated, or conditioned crawl spaces.
BrandCrawl Space Door Systems #ad
ManufacturerCrawl Space Door Systems, Inc #ad
Height0.5 Inches
Length18 Inches
Weight0.38 Pounds
Width10 Inches
Part NumberCECOMINOD043182

10. Glass Block Factory


For 16"W x 8"H Foundation Openings, Crawl Space Vent White

Glass Block Factory #ad - Made in the U. S. A. Double pane, frosted glass sash door with extruded bubble seal on perimeter ensures great thermal properties. Removable aluminum insect screen. Energy efficient window style construction with superior UV resistance. Fits 16x8 in. Opening - actual size 15 1/2"l x 7 3/4"H x 3 1/8D.
BrandGlass Block Factory #ad
ManufacturerAdvantage Manufacturing #ad
Height7.7 Inches
Length15.5 Inches
Width3.1 Inches
Part NumberCV1608