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We have flood vent and crawlspace installers all over the USA!
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Flood Vent Engineers

A list of certified Engineers to consult with about our flood vents

Flood Insurance Agents

A comprehensive list of recommended agents for your flood vent needs

Common Flood Vent Questions

Questions & Answers

Find answers to common questions about flood vents and other crawlspace products

Installation Videos: FEMA Compliant Flood Vents, Air Vents, Vent Covers, and Crawl Space Doors

WELCOME TO CRAWLSPACE DOOR SYSTEMS INC.-Flood Vents, Air Vents, Crawl Space Doors

Delivering Innovative Flood and Air Products to Protect your Health and Crawlspace with the best flood vent, air vent, vent covers, moisture barriers, and portable exhaust fan systems on the market.



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Why Buy a Crawlspace Door, Flood Vent, Air Vent, or Portable Fan System?

SSave money on flood insuranceAVE MONEY

Save money on your utility bill with our ventilation, door, fan and vent cover products. You can save money on your flood insurance premiums with our FEMA compliant flood vent.

air vents and portable exhaust fansSAVE ENERGY

Use our crawlspace air vents and doors to ventilate your crawlspace with natural air flow or forced air with our energy efficient exhaust and portable fans. Natural air flow and forced air flow cost less than a dehumidifier.

flood vents, air vents, moisture barriersSAVE THE ENVIRONMENT

Reducing the moisture in your crawlspace reduces mold that releases airborne mold spores into the environment.


Moisture in the crawlspace rots the wood under your home. Reduce the moisture in your crawlspace with our crawlspace doors, louvers, flood vents and portable exhaust fans.

foundation air vents and exhaust fansPROTECT YOUR FAMILY

A damp crawlspace is very unhealthy. Mold thrives in damp areas causing millions of airborne mold spores that can get into your home. Toxic mold spores can be deadly to children and people with allergies and COPD.

foundation vents and foundation exhaust fansGREEN CRAWLSPACE

Ventilate your crawlspace with natural air flow with our crawlspace air vents, louvers, and exhaust fans.

Select a Product to View: Engineered Flood Vents, Air Vents, Vent Covers, Exhaust Fans & More!

  • DOORS ► Crawlspace doors used for ventilation in the summer ● Close in the winter ● Excellent for closed or conditioned crawlspace applications ● The crawlspace door lid can be easily insulated for cold climates.
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  • AIR VENTS ► Crawlspace air vents increases the ventilation ● Reduces radon, moisture, mold and odors ● Increased net free air ● Fewer vents required!
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  • FLOOD VENTS ►Crawlspace flood vents are FEMA compliant ● Protect your home from flood waters ● Save money on Flood Insurance!
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  • Our fan controllers can be used individually or together to form a system to fit your crawlspace fan needs. Such as, reading humidity to regulate when your fan needs to turn on or off.
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  • PORTABLE FAN ► Crawlspace portable fans forces air flow into hard to reach areas and create jet streams ● 555 CFM to 1,115 CFM ● Low amperage, 115 Volts ● Meets OSHA standards
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  •  Durable PVC/ABS plastic (no rust or rot)Covers standard 8” X 16” crawl space foundation vents or openingsExcellent for closed, encapsulated or conditioned crawl spacesAttaches to outside of crawl space foundation wall with fasteners or adhesivePermanently seals 8” X 16” crawl space foundation openingsCrawl space vent cover can be insulated by gluing insulation inside the cover
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  • Crawl space exhaust fan mounted in door cover for easy crawlspace accessExhaust radon, odor and moisture from the crawlspaceRemoves evaporation from the crawlspace groundThe only large CFM crawl space fan with low amperage in the marketThe crawl space shutter fan comes with a 9’ cordHas a three speed controller and uses 115 voltsFloating shutters prevents...
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  • Flush mount install over the foundation opening Color: White So, even if you have an opening slightly smaller or larger you can utilize this crawlspace door Perfect for Retro-Fit  
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  • We carry a complete line of Solar Tek Products
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See What Everyone is Talking About!

Poly Buttons and Stakes
Crawlspace Vent Covers

Flood Vents, Air Vents, Vent Covers, Vermin ScreenCrawl Space Door Systems' mainstay product line is our durable plastic Crawlspace doors, Air, and Flood Vents with or without Louver and Vermin Screen. No Rust or Rot!

We have engineered and patented innovative AIR FLOW and FLOOD VENT SYSTEMS which:

This technology is unparalleled by industry standards. The crawlspace doors, air vents, flood vents and portable exhaust fans are used on single family homes and large condo complexes.