Foundation Vent Well
Window Well Experts builds galvanized steel foundation vent wells that protect your crawl space vents from debris, dirt and moisture. Each well attaches directly to your foundation wall, comes in semicircle or rectangular shapes, and holds up against ground pressure and surrounding soil.
- 30-year warranty on every vent well
- One-piece galvanized steel construction, 20-gauge
- Three stock sizes made to fit standard foundation vents
- Semicircle or rectangular shape options
- Nominal 11-1/2″ to 12″ deep
- Can be bolted together if extra depth is needed
- Ships anywhere in the continental United States
Galvanized Steel Foundation Vent Wells for Crawl Space Protection
If you’re looking for a small window well to protect a crawl space vent, our foundation vent wells are built to handle the job. They protect your crawl space vents at or just below ground level with their one-piece construction. Window Well Experts builds them from rust-free galvanized steel, corrugated to withstand the pressure of surrounding soil and backfill. Each well attaches straight to your foundation wall and helps keep landscaping materials, dirt, and water out of the crawl space vent.
Our vent wells come in three stock sizes, in either semicircle or rectangular shapes. If your foundation vent sits in an unusual spot or needs more projection to clear utilities, our wells can be bolted together if extra depth is needed. . Flat clear covers and steel grates are also available if you want to keep leaves and trash out of the well itself.
Call 1-888-397-8214 or send us photos through our free estimate form to request a quote.
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We Ship Anywhere in the Continental United States
What a Foundation Vent Well Protects
Crawl space vents keep air moving under your home, which helps control humidity levels and prevents mold, rotting wood, and pests from taking hold. Those vents only work when they stay clear. If dirt, mulch, or standing water blocks the opening, airflow stops and moisture issues follow.
A foundation vent well gives the vent the clearance it needs to breathe, even when the surrounding grade sits close to the opening. The galvanized steel wall holds back soil, keeps landscaping materials out of the vent, and protects the structural integrity of the vent itself. For homes in regions with heavy rain or wet drainage conditions, pairing the well with a flat cover or steel grate adds another layer of protection against water intrusion and debris.
Foundation Vent Wells: Sizes
| Type | Item Number | Gauge | Width | Projection | Available Depths |
|---|---|---|---|---|---|
| Metal Foundation Vent Well: Square | FVW16-4 | 20 | 16" | 4" | 11.5" |
| Metal Foundation Vent Well: Semicircle/Round | FVW208-12 | 20 | 20" | 8" | 12" |
| Metal Foundation Vent Well: Semicircle/Round | FVW2012-12R | 20 | 20" | 12" | 12" |
Measurement Guide
Get our printable PDF with instructions on how to measure your window and foundation for a window well.
Product Features
Engineered for long-term basement protection. Built for strength, durability, and weather resistance.
Galvanized Steel
Rust-free one-piece construction, 20-gauge, built to hold up against soil and moisture.
Corrugated Wall
Ribbed design handles ground pressure without buckling.
Three Stock Sizes
Fits standard foundation vents, with options for extra projection where utilities or pipes run close to the wall.
Semicircle or Rectangular
Choose the shape that gives you clearance around your vent.
Boltable Design
Two or more wells can be fastened together for deeper wells.
30-Year Warranty
Backed by Window Well Experts’ standard galvanized steel warranty.
Shipping Vent Wells Nationwide
Window Well Experts ships foundation vent wells to every state in the continental United States. Orders ship directly to your home or jobsite, ready to attach to your foundation.
Extreme Durability
If your well ever fails under normal use, we replace it.
Direct shipping
Anywhere in the continental US, directly to your home or job site.
FREE Consultation
Not sure which size or shape fits your vent? Contact us for a free consultation with a window well expert.
Frequently Asked Questions
The well sits flush against your foundation wall and fastens through pre-drilled holes using masonry anchors or other fasteners.
Foundation vent wells are smaller and sit around crawl space vents at or just below ground level. Basement window wells are larger and surround a basement window to let light in and allow emergency exit on egress-sized wells. If you need a well for a basement window, our window wells category is the right place to start.
Yes. A flat cover or steel grate works with our vent wells to keep debris, leaves, and small pests out of the opening. The vent still gets airflow through the sides of the grate or minimally around the cover edge.
Our vent wells are made from galvanized steel, which resists rust and corrosion in direct contact with soil. The 30-year warranty covers normal use against rust-through under standard drainage conditions.
Yes. We ship to every state in the continental United States, and nationwide shipping is included in the price.
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By Sending Us Your Window Well’s Measurements
Have Questions Or Need Help Measuring Your Wells? No Worries! Our Experts Are Available To Take Your Call
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A Trusted Source for Vent Wells and Window Wells
Window Well Experts has become a go-to source for crawl space and basement wells across the country by making wells and covers that fit, hold up, and keep foundations protected. Each foundation vent well is manufactured in the USA at our facility, inspected before it ships ,and backed by a 30-year warranty. Homeowners and contractors in all 48 continental states turn to us when they need a vent well that will outlast the alternatives.
Get a Free Estimate!
Tell us the size of your foundation vent, and we’ll send a free quote on a galvanized steel vent well that fits. Contact us or fill out the free estimate form, and a Window Well Expert will get back to you with sizing, pricing, and shipping details.