Supply registers deliver conditioned air into a room and include an adjustable damper or deflection to aim and balance the flow. AirGrilles stocks supply registers in 3 materials, steel, aluminum, and wood, and 5 colors, black, brown, gray, oak, and white, for floor, wall, ceiling, and baseboard openings. Sized by the duct opening from 2 inches to 30 inches, each register has an outer face about 2 inches larger than the opening, and airflow comes in 5 patterns: 1-way, 2-way, 3-way, 4-way, and adjustable. Bulk pricing spans 6 quantity tiers with savings up to 30%, orders of 500+ units qualify for custom production, and in-stock items ship the same day on orders placed by 11AM ET.

Steel, Aluminum, and Wood Supply Registers

Supply registers come in steel, aluminum, and wood, each suited to a different room. Steel supply registers are the rigid, cost-effective default for most walls, floors, and ceilings, in black, gray, and white. Aluminum registers weigh less and resist corrosion for humid rooms, while wood registers match hardwood floors and design-led interiors in oak and brown tones. Match the material to the room before checking the size and airflow.

How to Size a Supply Register and Set the Airflow

Supply registers are ordered by the duct opening, measured as width by height, not the outer cover. The outer face runs about 2 inches larger than the opening, so a 2"W x 10"H opening uses a 3-3/4"W x 11-3/4"H face that overlaps the hole. Airflow is set by the deflection, where 1-way and 2-way push air toward a wall or room, 3-way and 4-way spread it from a ceiling, and adjustable models let you change it. Round-neck diffusers in this range connect to duct in 6, 8, 10, and 12 inch necks, so the size, airflow, and neck together decide the register before the location does.

Floor, Wall, and Baseboard Registers

Supply registers mount in different locations, each with a matching style. Floor registers sit in the floor with a walkable face and an adjustable damper, while wall and ceiling registers handle vertical and overhead supply. Baseboard supply registers fit low wall openings near the floor, and steel round diffusers and butterfly dampers serve round duct and airflow control. Match the register to where the opening sits before placing the order.

Bulk, Custom, and Project Orders

Bulk pricing on supply registers 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 steel supply register can drop close to 30% per unit from the single-unit rate to the 50+ tier. AirGrilles supports custom supply register 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 whole-house and multi-room jobs stay on schedule.

Common Questions About Supply Registers

These answers cover the most common register, airflow, and ordering questions for supply registers.

Register or grille — which do I need?

A register has an adjustable damper behind the face to open, close, or balance airflow, while a grille is fixed with no damper. For return openings that pull air back to the system, choose a return grille instead, since a supply register is built to push conditioned air out. For supply air where you want room-by-room control, choose a register.

What does 1-way, 2-way, 3-way, or 4-way mean?

It is the direction the register throws air into the room. A floor or wall register against a wall usually uses 1-way or 2-way deflection to push air outward, while a ceiling register often uses 3-way or 4-way to spread air in several directions. An adjustable register lets you change the throw after installation, so match the throw to where the register sits.

What material should I pick?

You should pick steel for durability and value on most registers. Choose aluminum supply registers for humid rooms and lighter weight, and wood for hardwood floors and design-led interiors. All ship from the same in-stock range.

Do you carry round diffusers and butterfly dampers?

Yes, the supply range includes steel round ceiling diffusers and steel butterfly dampers alongside flat registers. Round diffusers spread air from a round duct, while butterfly dampers control the volume of airflow inside the duct. Check the product cards for each type and size.

Are baseboard supply registers different from standard registers?

Yes, baseboard supply registers are shaped for low wall openings near the floor, where a standard register would sit too high. Baseboard supply registers come in steel and wood for a clean, low-profile supply along the base of a wall. Order by the baseboard opening size, the same way as other registers.

Is there a discount for a whole house or job?

Yes, bulk pricing tiers apply automatically as the quantity climbs, with savings up to 30% at higher tiers. Orders of 500+ units qualify for custom production, and in-stock items ship the same day on orders placed by 11AM ET. A whole-house or job order is exactly what the in-stock, self-service model is built for.