What does a Linear Slot Diffuser do? What are Linear Slot Diffusers used for? What is a Slot Diffuser?

Linear Slot Diffusers are Vent Covers that are Linear and the “face” of a vent. The Air Conditioning unit distributes air throughout the home/building via the air duct tubing and delivers hot/cold air to each room that the vent is in.

Are Linear Slot Diffusers good?

Linear Slot Diffusers are the “face” of the vent, often referred to as a Vent Cover. Linear Slot Diffusers are good in the sense that they are aesthetically pleasing to look at and give a modern feel to any room they are in.

How do I choose a Linear Slot Diffuser?

For New Builds, we always recommend checking with your HVAC Contractor to confirm the CFM’s each room will need and then selecting your Linear Slot Diffusers based on the CFM’s

What sizes do vent covers come in? What is the standard vent cover size?

Vent Covers, Grilles, Registers, Diffusers come in different sizes. The most Standard Sizes being 10” x 6” and 12” x 6” and 8” x 4” - You will find at least one of these in most homes.

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✨ Elevate your airflow game with sleek, silent efficiency! 🌀

SLEEK MODERN DESIGN - Upgrade your HVAC with a stylish linear slot diffuser that transforms any space with a hotel-chic vibe.
INVISIBLE INSTALLATION - Hidden screw-in mounting keeps your vents looking flawless—no visible hardware to spoil the clean lines.
PRECISION FIT GUARANTEED - Exact 36" plenum box size ensures seamless retrofit to existing duct openings—no guesswork, no hassle.
DURABLE GALVANIZED ALUMINUM - Premium corrosion-resistant metal built to last, combining strength with lightweight ease.
THERMALLY INSULATED PERFORMANCE - Foam insulation locks in temperature control, boosting HVAC efficiency and reducing energy waste.

The BUILDMART 36" Plenum Box is a premium insulated galvanized aluminum component designed for Texas Buildmart's 36" 2-slot linear slot diffusers. Engineered for easy screw-in installation with hidden mounting, it offers precise dimensions (37 x 5 x 12 inches) and foam insulation to enhance HVAC thermal performance. Ideal for modern remodels or new builds, this durable, paintable plenum box delivers a sleek, hotel-quality aesthetic while improving airflow efficiency.

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TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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Manufacturer	Texas Buildmart
Part Number	36x2SxPL
Item Weight	10.98 pounds
Product Dimensions	37 x 5 x 12 inches
Item model number	36x2SxPL
Is Discontinued By Manufacturer	No
Color	Silver
Finish	Finished
Material	Aluminum
Installation Method	Screw-In
Item Package Quantity	1
Number Of Pieces	1
Head Style	Philips
Measurement System	English/Standard
Mounting Type	Screw-In
Special Features	Easy to Install
Batteries Included?	No
Batteries Required?	No

BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - (2 Slot) Double Slot] Premium Insulated Galvanized Sheet Metal Plenum Box for Heating and Cooling - Texas Buildmart

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