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PLENUM BOXES

Your Source for AC Vent Covers & Linear Diffusers

Improve the look and feel of your interior with the help of Texas Buildmart. We offer an assortment of clean, elegant, and high-quality AC vent covers and linear diffusers. Thanks to our diverse product selection, you can craft a space that is both beautiful and energy-efficient. We also provide installation videos and helpful tips to ensure you get the most from your purchase.

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Our air vents and grilles are built to last and priced to accommodate your budget. On top of that, these fixtures are specially designed to look great and last long. These products are sized to fit a full range of HVAC ducts.

Additionally, our products are crafted completely from aluminum and finished with electrostatic paint. This means they won’t rust or degrade in appearance, even after prolonged use.

These non-corroding vent covers feature directional systems with a 3-way airflow option. By maximizing airflow, these vents can enhance the performance of your air conditioning, improving comfort and air circulation. The versatile diffusers and covers have a modern look that integrates seamlessly with your existing interior design and décor.

Enjoy a sleek interior with minimal mess. Our vents and grilles are easy to clean and use internal mounts. This allows your interior to maintain an elegant appearance that makes dust more comfortable to manage. Also, our vents are rated with a 9.8 velocity, making them welcome additions to efficient HVAC systems.

Ordering & Shipping Info

Experience the difference that our linear slot diffusers make and place your order today. To get started, just set up your online account, or log in if you are an existing customer.

We take pride in processing online orders quickly, and we ship to any location in the United States using a variety of carriers. We can also ship some items to international destinations. If you see something that you’d like sent to an international address, please contact us to get more information.

All AC vent covers and linear diffusers are eligible for a full refund or exchange within 30 days. However, shipping and handling charges are not refundable. Any information you send to us through this site, including shipping and payment information, remains strictly confidential.

Thank you for your interest in our air conditioner vent covers. We are committed to achieving your complete satisfaction by ensuring that your high-quality, affordable vents and accessories meet your expectations.

Contact us with any questions about our products. We ship to customers nationwide and to select destinations around the world.

Displaying products 1 - 12 of 12 results
12'' X 1 3/4" PLENUM BOX - 1 SLOT
Price: Coming Soon Sept 2021
12'' X 1 3/4" PLENUM BOX - 1 SLOT
COMING SOON September 2021
12'' X 3 3/4" PLENUM BOX - 2 SLOT
Price: $65.00 - Visit our NEWER website www.linearslotdiffusers.com to buy PLENUM Boxes and Diffusers
12'' X 3 3/4" PLENUM BOX - 2 SLOT
Galvanized sheet metal Plenum Box with foam insulation, ideal for Texas Buildmart 12" lineal slot diffuser. This Air-distribution box attaches directly to the supply of the HVAC equipment that heats or cools the air. Total Box Dimensions: B:13" W:4" H: 13
18" X 1 3/4" PLENUM BOX - 1 SLOT
Price: Coming Soon Sept 2021
18" X 1 3/4" PLENUM BOX - 1 SLOT
COMING SOON September 2021
18" X 3 3/8" PLENUM BOX - 2 SLOT
Price: $75.00 - Visit our NEWER website www.linearslotdiffusers.com to buy PLENUM Boxes and Diffusers
18" X 3 3/8" PLENUM BOX - 2 SLOT
Galvanized sheet metal Plenum Box with foam insulation, ideal for Texas Buildmart 18" lineal slot diffuser. This Air-distribution box attaches directly to the supply of the HVAC equipment that heats or cools the air.
24" X 1 3/4" PLENUM BOX - 1 SLOT
Price: Coming Soon Sept 2021
24" X 1 3/4" PLENUM BOX - 1 SLOT
COMING SOON September 2021
24" X 3 1/2" PLENUM BOX - 2 SLOT
Price: $85.00 - Visit our NEWER website www.linearslotdiffusers.com to buy PLENUM Boxes and Diffusers
24" X 3 1/2" PLENUM BOX - 2 SLOT
Galvanized sheet metal Plenum Box with foam insulation, ideal for Texas Buildmart 24" lineal slot diffuser. This Air-distribution box attaches directly to the supply of the HVAC equipment that heats or cools the air.
36" X 1 3/4" PLENUM BOX - 1 SLOT
Price: Coming Soon Sept 2021
36" X 1 3/4" PLENUM BOX - 1 SLOT
COMING SOON September 2021
36" X 3 1/2" PLENUM BOX - 2 SLOT
Price: $115.00 - Visit our NEWER website www.linearslotdiffusers.com to buy PLENUM Boxes and Diffusers
36" X 3 1/2" PLENUM BOX - 2 SLOT
Galvanized sheet metal Plenum Box with foam insulation, ideal for Texas Buildmart 36" lineal slot diffuser. This Air-distribution box attaches directly to the supply of the HVAC equipment that heats or cools the air.
48" X 1 3/4" PLENUM BOX - 1 SLOT
Price: Coming Soon Sept 2021
48" X 1 3/4" PLENUM BOX - 1 SLOT
COMING SOON September 2021
48" X 3 1/2" PLENUM BOX - 2 SLOT
Price: $150.00 - Visit our NEWER website www.linearslotdiffusers.com to buy PLENUM Boxes and Diffusers
48" X 3 1/2" PLENUM BOX - 2 SLOT
Galvanized sheet metal Plenum Box with foam insulation, ideal for Texas Buildmart 48" lineal slot diffuser. This Air-distribution box attaches directly to the supply of the HVAC equipment that heats or cools the air.
60" X 1 3/4" PLENUM BOX - 1 SLOT
Price: Coming Soon Sept 2021
60" X 1 3/4" PLENUM BOX - 1 SLOT
COMING SOON September 2021
60" X 3 1/2" PLENUM BOX - 2 SLOT
Price: $175.00 - Visit our NEWER website www.linearslotdiffusers.com to buy PLENUM Boxes and Diffusers
60" X 3 1/2" PLENUM BOX - 2 SLOT
Galvanized sheet metal Plenum Box with foam insulation, ideal for Texas Buildmart 60" lineal slot diffuser. This Air-distribution box attaches directly to the supply of the HVAC equipment that heats or cools the air.