About Commercial Vent Covers
We have a large inventory of commercial-grade vent covers, whether you need grilles or diffusers for your building. There are different kinds of vent covers, ranging from T-Bar to Spiral Pipe and, of course, wall installations. Remember that registers and diffusers deliver air, and grilles return it to the HVAC system. For your convenience, we have our most common commercial vent covers in the following categories:
- T-Bar Grilles are for return air within T-bar installations.
- T-Bar Diffusers are part of the installation that delivers filtered, cool, or warm air to building occupants.
- Spiral Pipe Grilles are return-air grilles designed specifically for spiral pipe installations. Exposed ductwork like this is a very trendy solution for restaurants and bars.
- Wall Air Grilles: heavy-duty grilles for large buildings that require powerful HVAC systems.
Best-Selling Heavy-Duty Vent Covers:
- 36" x 36" Heavy-Duty Return Air Grille - Shoemaker 1075-36X36
- 30" x 36" Heavy-Duty Return Air Grille - Shoemaker 1075-30X36
- 18" x 20" Heavy-Duty Return Air Grille - Shoemaker 1075-18X20
- 14" x 36" Heavy-Duty Return Air Grille - Shoemaker 1075-14X36
- 25" x 30" Heavy-Duty Return Air Grille - Shoemaker 1075-25X30
- 36" x 8" Heavy-Duty Return Air Grille - Shoemaker 1075-36X8
- 36" x 24" Heavy-Duty Return Air Grille - Shoemaker 1075-36X24
- 18" x 30" Heavy-Duty Return Air Grille - Shoemaker 1075-18X30
- 20" x 36" Heavy-Duty Return Air Grille - Shoemaker 1075-20X36
- 36" x 20" Heavy-Duty Return Air Grille - Shoemaker 1075-36X20
- 36" x 30" Heavy-Duty Return Air Grille - Shoemaker 1075-36X30
- 30" x 12" Universal Spiral Grille - Shoemaker USR34-SC-30X12
- 20" x 4" Universal Spiral Grille, Double Deflection - Shoemaker USR34-20X4
- 20" x 4" Heavy-Duty Return Air Grille - Shoemaker 1075-20X4
- 16" x 18" Heavy-Duty Return Air Grille - Shoemaker 1075-16X18
- 18" x 8" Heavy-Duty Return Air Grille - Shoemaker 1075-18X8
- 16" x 36" Heavy-Duty Return Air Grille - Shoemaker 1075-16X36
- 14" x 8" Radius Spiral Pipe Grille, Double Deflection, Galvanized - Shoemaker RS34-GALV-14X8
- 18" x 14" Heavy-Duty Return Air Grille - Shoemaker 1075-18X14
- 18" x 4" Universal Spiral Grille, Double Deflection - Shoemaker USR34-18X4
- 9" Perforated Modular Core T-Bar Diffuser - Shoemaker 825MA-9
- 18" x 4" Heavy-Duty Return Air Grille - Shoemaker 1075-18X4
- 22" x 14" Heavy-Duty Return Air Grille - Shoemaker 1075-22X14
- 36" x 12" Heavy-Duty Return Air Grille - Shoemaker 1075-36X12
- 16" x 6" Universal Spiral Grille, Double Deflection - Shoemaker USR34-16X6
- 24" x 4" Heavy-Duty Return Air Grille - Shoemaker 1075-24X4
