Front of 48 Inch 3 Slot Linear Slot Plenum Box - Linear Slot Diffuser Plenum - Texas Buildmart - AC Vent Covers - Linear Plenum Box
Side of 48 Inch 3 Slot Linear Slot Plenum Box - Linear Slot Diffuser Plenum - Texas Buildmart - AC Vent Covers - Linear Plenum Box
Top of 48 Inch 3 Slot Linear Slot Plenum Box - Linear Slot Diffuser Plenum - Texas Buildmart - AC Vent Covers - Linear Plenum Box
Lifestyle 1 of 48 Inch 3 Slot Linear Slot Plenum Box - Linear Slot Diffuser Plenum - Texas Buildmart - AC Vent Covers - Linear Plenum Box
Lifestyle 2 of 48 Inch 3 Slot Linear Slot Plenum Box - Linear Slot Diffuser Plenum - Texas Buildmart - AC Vent Covers - Linear Plenum Box
Lifestyle 3 of 48 Inch 3 Slot Linear Slot Plenum Box - Linear Slot Diffuser Plenum - Texas Buildmart - AC Vent Covers - Linear Plenum Box
Brochure of 48 Inch 3 Slot Linear Slot Plenum Box - Linear Slot Diffuser Plenum - Texas Buildmart - AC Vent Covers - Linear Plenum Box
  • Front of 48 Inch 3 Slot Linear Slot Plenum Box - Linear Slot Diffuser Plenum - Texas Buildmart - AC Vent Covers - Linear Plenum Box
  • Side of 48 Inch 3 Slot Linear Slot Plenum Box - Linear Slot Diffuser Plenum - Texas Buildmart - AC Vent Covers - Linear Plenum Box
  • Top of 48 Inch 3 Slot Linear Slot Plenum Box - Linear Slot Diffuser Plenum - Texas Buildmart - AC Vent Covers - Linear Plenum Box
  • Lifestyle 1 of 48 Inch 3 Slot Linear Slot Plenum Box - Linear Slot Diffuser Plenum - Texas Buildmart - AC Vent Covers - Linear Plenum Box
  • Lifestyle 2 of 48 Inch 3 Slot Linear Slot Plenum Box - Linear Slot Diffuser Plenum - Texas Buildmart - AC Vent Covers - Linear Plenum Box
  • Lifestyle 3 of 48 Inch 3 Slot Linear Slot Plenum Box - Linear Slot Diffuser Plenum - Texas Buildmart - AC Vent Covers - Linear Plenum Box
  • Brochure of 48 Inch 3 Slot Linear Slot Plenum Box - Linear Slot Diffuser Plenum - Texas Buildmart - AC Vent Covers - Linear Plenum Box
Texas Buildmart

BUILDMART - 48" Plenum Box for [48" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling - Texas Buildmart

Regular price $267.91 Sale price $352.52 Unit price per

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  • 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. Connects to: 10" flexible duct in oval shape. Can be used and brazed to a 4" or 6" wood stud. If you do not have this size flex, you can use a reducer to modify the size. Professional HVAC Installer is Recommended.
  • Ideal for Texas Buildmart 48" Lineal Slot Diffuser - 3 Slot
  • Galvanized sheet metal Plenum Box with foam insulation
  • Total Box Dimensions: L: 48 3/4" W: 6 1/16" H: 11 15/16"
  • Mouth Dimensions: L: 47 1/2" W: 4 7/8"
  • Entry size: 2 entries of 10" flex in oval shape
  • This air-distribution box attaches directly to the supply of the HVAC equipment that heats or cools the air
  • If you do not have this size flex, you can use a reducer to modify the size
  • We recommend using a "Y" shaped splitter to supply your plenum box with an even amount of airflow through your diffuser. 

48" 3 slot linear diffuser

 

Here's a link to the Diffuser that fits this Plenum Box:

48" Linear Slot Diffuser - 3 Slot - Triple Slot Linear Diffuser - Texas Buildmart - Modern AC Vent Covers for Ceilings, Walls & Floors - Commercial Grade HVAC Registers, Grilles & Vents - Home Decor & Wall Decor for Amazon Home

 

48" 3 slot linear slot diffuser black

 

 

Here's a link to the Diffuser that fits this Plenum Box:

48" Linear Slot Diffuser - 3 Slot - Triple Slot Linear Diffuser - Texas Buildmart - Modern AC Vent Covers for Ceilings, Walls & Floors - Commercial Grade HVAC Registers, Grilles & Vents - Home Decor & Wall Decor for Amazon Home

How to install Standard Linear Slot Diffuser:


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Miguel B. Verified Customer   
04-05-25

Perfect thank you for the service and the good product

JMi Verified Customer   
04-05-25

Looks good so far. I haven't installed them as yet.

Miguel B. Verified Customer   
03-24-25

Everything Perfect Thank You

Questions & Answers
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Popular Questions

6 months ago
What time are you opened ?
6 months ago
Hello,

Thank you for reaching out to Texas Buildmart! We appreciate your interest and are here to assist you with any questions. Our operating hours are from 8am-6pm, Monday through Friday, and during this time, our team is available to help with all your supply needs, including inquiries related to your projects or orders. … See full answer »
1 year ago
1 year ago
Hello, Thank you for your interest in our BUILDMART - 12x4 Modern AC Vent Cover. We appreciate your inquiry about a bulk discount, however, the price listed on our website is already our most competitive rate. We aim to offer top quality products at the best possible prices. For any further queries or assistance, please feel free to call us at (956)900-1103.
1 year ago
1 year ago
We ship out the same day or the next business day, with delivery taking 3-5 days to arrive. If you have any further questions, please contact us at 956-900-1103.
1 year ago
I want to place an order and I want to know if the items are always in stock or is there a lead time?
1 year ago
Greetings! We appreciate your interest in Texas Buildmart. We ensure that our products are constantly in stock and prepared for immediate dispatch, either on the same day or the next business day. Expected delivery time is within 2-5 days. For any further queries, feel free to contact us directly at (956)900-1103.
1 year ago
Are there any discounts for large order for more than 10 items?
1 year ago
Hello, Thank you for contacting us at Texas Buildmart. We're always ready to assist you. Currently, we don't offer quantity discounts or promotional codes. Rest assured, the prices on our LinearSlotDiffusers.com website are the best we can offer. We aim to provide high-quality products at competitive rates. If you have more questions, feel free to ask. We're here to help.
1 year ago
Is this the metal of the product aluminum or steel?
1 year ago
Hello! We appreciate your interest in Texas Buildmart. Our product is made of durable aluminum, with an electrostatic coating for effortless cleaning - a simple swipe with a towel will do the trick! For further inquiries, please contact us at (956)900-1103. Thank you.
1 year ago
I want one with out paint, is this possible?
1 year ago
Greetings, Thank you for contacting LinearSlotDiffusers.com. We appreciate your inquiry regarding our vent covers. Unfortunately, we do not offer an aluminum finish. Our diffusers come with an electrostatic finish in either white or black. Despite this, you can personalize the product by painting it with any oil-based paint or epoxy, which will adhere to the coating. For further assistance, feel free to reach us directly at (956)900-1103. Thank you!
1 year ago
On the website it shows the measurements of the inside and outside dimensions.
It doesn't show the depth of the vent cover, could you tell us the depth of the vent cover?
Thank you.
1 year ago
Greetings, Thank you for your inquiry with LinearSlotDiffusers.com. The depth of our linear and standard vent covers is uniformly measured at 1 3/4". This measurement spans from the top faceplate to the bottom of the vent neck. Should you require further information or have additional questions, please don't hesitate to ask. We're always here to assist you!
1 year ago
Can this be spray painting or do I need a specific paint.
1 year ago
Hello, Thank you for contacting us at LinearSlotDiffusers.com. Yes, the vents can be painted in your preferred color. We recommend using oil-based paint for best results. Hope this helps. Have a great day!
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