Welcome to Crawl Space Door Systems

Supplying homeowners, pest control companies, contractors, and builders with quality crawlspace air vents, flood vents, vent covers, exhaust fans, and more for over 15 years.  Crawl Space Door Systems was founded on great products, principles, and customer service. We also have a certified floodplain manager on staff to answer your questions about flood vents, flood risk management, and saving money on flood insurance. FEMA does not approve flood vents, but you can be compliant to the guidelines FEMA has set forth when installing flood vents.

Crawl Space Doors with Louvers

Crawl Space Doors replace rusting, rotting access doors& vents that invite moisture & pests to the crawlspace.

Crawl Space Doors without Louvers

Crawl Space Doors without Louvers are designed for encapsulation and crawlspace access.

FEMA Compliant Engineered Flood Vents

FEMA Compliant Engineered Flood Vents
Engineered Flood Vents are compliant with FEMA’s flood zone requirements and engineer certified.

Crawl Space Power Fans and Humidistats

Crawlspace power vents and humidistats for ventilation.

Automatic Foundation Vents

Automatic Foundation Vents automatically open and close based on temperature with a bi-metal coil.

Manual Vents with Cover

16”x8” standard vents that won’t rust or rot. They have louvers, a vermin screen, and removable cover.

Crawl Space Vent Covers

Crawl Space Vent Covers are excellent for closed, encapsulated or conditioned crawl spaces.

Vapor Barrier

Reinforced plastic that puts a “barrier” between the moisture from the ground and the sub-floor of your home.

Portable Exhaust Fan System

Crawlspace Exhaust Fan for foundation ventilation
The Portable Exhaust Fan System helps pull unwanted moisture and air out of the crawlspace.

Crawl Space Portable Fan

Designed for the crawlspace, safer than normal fans, energy efficient and enclosed for moisture areas.


Crawl Space & Basement Dehumidifiers are powerful tools against moisture issues in your home.

Sump Pumps

Quality sump pumps and sump pump kits which help to remove water from the crawlspace area.

Buy Online

flood vents and air vents
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Local Distributors of flood vents, air vents, and other crawlspace products near you!


We have flood vent and crawlspace installers all over the USA!
Find one near you!

Home Owners

Protect your foundation and crawlspace with the best products on the market today.


We supply pest control companies, contractors, builders and other professionals with quality products for over 15 years

Common Flood Vent Questions


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

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.


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.

flood vents, air vents, moisture barriersSAVE THE ENVIRONMENT

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

PROTECT YOUR FAMILYfoundation air vents and exhaust fans

A damp crawlspace is unhealthy. Mold thrives in damp areas causing millions of airborne mold spores to enter your home. Toxic mold spores can be deadly to children, folks 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.

Installation Videos:

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

See What Everyone is Talking About!

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.

  • Mr. and Mrs. Jose Barcita, Chesapeake, VA

    We had a lake under our house, literally! We had several “moisture” control companies look at the problem and they all said the same thing “you need sand…

  • Gerald Harris, Virginia Beach, VA

    Crawl Space Doors did an excellent job for us. They ship quickly and actually return calls! I would recommend Crawl Space Doors to anyone who asked. Their flood…

  • Vivian Teter, Norfolk, VA

    If you need foundation vents, crawls space doors with built-in fans or under-house fans, vapor barriers, or anything having to do with ventilation and moisture control, I highly…