Exterior louvers cover attic, wall, and exhaust openings on the outside of a building, letting air pass while a louvered face blocks rain and a bird screen or flap keeps birds out. AirGrilles stocks exterior louvers across 2 families, aluminum exterior gable vents and dryer vent covers, in anodized aluminum and stainless steel with silver finishes. Gable and wall vents are sized by the opening, with an outer frame about 2 inches larger, while dryer vent covers are sized by the round duct neck in 4, 5, 6, and 8 inch connections. Bulk pricing spans 6 quantity tiers with savings up to 30%, qualifies for custom production at 500+ units, and ships the same day on in-stock orders placed by 11AM ET.

Aluminum Gable and Wall Vents

Aluminum gable and wall vents ventilate an attic or exterior wall through a louvered face that sheds rain. The aluminum exterior gable vents range mounts on the outside wall, where angled louvers block weather and a fixed 1/2" x 1/2" galvanized steel bird mesh screen behind them keeps out birds and squirrels. The unpainted anodized aluminum resists rust in sun and rain. These vents are sized by the wall opening, which sets the frame before the duct connection matters.

How to Size an Exterior Louver

Exterior louvers are sized two ways, depending on the type. Gable and wall vents are ordered by the wall opening, with an outer frame about 2 inches larger, so an 18"W x 18"H opening uses a 20"W x 20"H frame. Dryer vent covers are ordered by the round duct neck, in 4, 5, 6, and 8 inch sizes that match a standard dryer exhaust. Measure the opening or the duct before ordering, since the cover type sets which dimension matters.

Dryer Vent Covers

Dryer vent covers cap a dryer exhaust duct on the outside wall, releasing warm air while stopping backdraft. Dryer vent covers use a flap or damper that opens with airflow and closes when the dryer stops, which keeps out cold air, rain, and pests. They connect to the round duct by neck size, in 4, 5, 6, and 8 inch options. A dryer cover handles exhaust, while a gable vent handles attic airflow.

Bulk, Custom, and Project Orders

Bulk pricing on exterior louvers drops the per-unit cost across 6 quantity tiers: 1, 2-10, 11-20, 21-49, 50+, and 100+, with savings up to 30% at the highest tiers. A typical aluminum gable vent can drop close to 30% per unit from the single-unit rate to the 50+ tier. AirGrilles supports custom exterior louver production on orders of 500+ units, with the exact size, material, finish, and lead time set per project. In-stock items ship the same day on orders placed by 11AM ET, so builders and property teams keep multi-unit jobs on schedule.

Common Questions About Exterior Louvers

These answers cover the most common use, sizing, and material questions for exterior louvers.

What is an exterior louver?

An exterior louver is an outside vent with angled blades that let air pass while blocking rain and direct weather. Exterior louvers cover attic, wall, and exhaust openings, with a bird screen or damper that keeps out birds. Mount one wherever an exterior opening needs airflow with weather protection.

What is the difference between a gable vent and a dryer vent cover?

A gable vent ventilates an attic or wall opening through a louvered face, while a dryer vent cover caps a dryer exhaust duct with a flap or damper. A gable vent is sized by the wall opening, and a dryer vent cover is sized by the round duct neck. Choose a gable vent for attic airflow, and a dryer cover for exhaust.

What materials and finishes do exterior louvers come in?

Exterior louvers come in anodized aluminum and stainless steel, in silver finishes. Aluminum is lightweight and rust-resistant for gable and wall vents, while steel adds rigidity on some covers. Match the material to the exterior exposure and the look.

Do exterior louvers keep out birds and insects?

Exterior louvers keep out birds, but gable vents do not keep out insects. Gable vents use a fixed 1/2" x 1/2" galvanized steel bird mesh screen that stops birds and squirrels, and insects pass through openings that size. Dryer vent covers use a flap that closes when the dryer stops.

Are exterior louvers available in bulk or custom orders?

Yes, exterior louvers qualify for bulk tiers automatically and custom production on orders of 500+ units. Bulk savings reach up to 30% at higher quantities, and in-stock items ship the same day on orders placed by 11AM ET. Custom output depends on the size, material, finish, and lead time.