---
product_id: 419306596
title: "BUILDMART - 36\" Plenum Box for [36\" Linear Slot Diffuser - (1 Slot) Single Slot] Premium Insulated Galvanized Sheet Metal Plenum Box for Heating and Cooling - Texas Buildmart"
brand: "buildmart"
price: "2420 Lei"
currency: RON
in_stock: true
url: https://www.desertcart.ro/products/419306596-buildmart-36-plenum-box-for-36-linear-slot-diffuser-1
store_origin: RO
region: Romania
---

# 36.7" length precision fit Foam insulated galvanized metal Screw-in hidden installation BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - (1 Slot) Single Slot] Premium Insulated Galvanized Sheet Metal Plenum Box for Heating and Cooling - Texas Buildmart

**Brand:** buildmart
**Price:** 2420 Lei
**Availability:** ✅ In Stock

## Summary

> 🛠️ Elevate your airflow game with sleek, silent efficiency!

## Quick Answers

- **What is this?** BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - (1 Slot) Single Slot] Premium Insulated Galvanized Sheet Metal Plenum Box for Heating and Cooling - Texas Buildmart by buildmart
- **How much does it cost?** 2420 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/419306596-buildmart-36-plenum-box-for-36-linear-slot-diffuser-1)

## Best For

- buildmart enthusiasts

## Why This Product

- Trusted buildmart brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Durable & Insulated:** Galvanized sheet metal with foam insulation maximizes thermal efficiency and longevity in any climate.
- • **Sleek Modern Upgrade:** Transform your HVAC with a premium linear slot diffuser plenum box that screams contemporary elegance.
- • **Precision Fit Guaranteed:** Exact 36" length and 10" oval entry size ensure seamless retrofit to existing ductwork—no guesswork needed.
- • **Versatile & Ready to Ship:** Available in multiple sizes and colors, paintable to match your style, perfect for remodels or new builds.
- • **Effortless Hidden Installation:** Pre-drilled internal screw holes keep aesthetics flawless—no visible screws, just clean lines.

## Overview

The BUILDMART 36" Plenum Box is a premium insulated galvanized sheet metal component designed specifically for the 36" single slot linear slot diffuser. Engineered for easy retrofit with precise dimensions and hidden screw-in installation, it enhances HVAC aesthetics and performance. Ideal for modern homes and commercial spaces, it offers durability, thermal insulation, and versatile sizing options, all ready to ship from Texas Buildmart.

## Description

BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - (1 Slot) Single Slot] Premium Insulated Galvanized Sheet Metal Plenum Box for Heating and Cooling - Texas Buildmart

## Features

- Ideal for Texas Buildmart 36" 1 Slot Lineal Slot Diffuser
- Galvanized sheet metal Plenum Box with foam insulation.
- Total Box Dimensions: L: 36 7/8" W: 3" H: 12"
- Entry size: 1 entry of 10" flex in oval shape
- *This is a design and utility patent pending product* We make sizes from 12" to 72" linear slot diffuser ac vent covers for the modern day home
- We have over 70 standard vent cover sizes to replace your traditional looking grills. We also have over 40 linear slot diffuser sizes with their matching plenum box. All models are in stock ready to ship in both white and black colors – Our models are also paintable.
- All vent cover sizes can be used as both supply and return grilles. Currently our decorative air vent covers are non-filtered models. This will work perfectly if you have your filter in the machine.
- A standard linear slot diffuser is a modern looking decorative air vent cover that fits on a traditional air exit and replaces the traditional looking grills. They have a beautiful linear slot diffuser; they are easy to replace since it is retrofit to the traditional vent cover sizes. Enjoy the incredible looks, the durability since it is 100% aluminum, and they are also very easy to clean. A linear slot diffuser is a linear air exit or vent cover with a long linear look that you usually find in hotels and modern houses. The standard linear slot diffusers and the linear slot diffusers can both be used for remodels and new construction.
- The size that you need to know to buy this vent cover, or any other vent cover is by measuring the air duct opening (the plenum box opening) and not the face size or the vent cover. We recommend you remove the old air vent cover and measure the size of the air duct opening. You do not need to take into consideration the face size of the vent cover. The important measurement is the interior duct opening size. Example: A traditional vent cover size can have a face size of 14x8, and neck of a little less than a 12x6. Your air duct opening should measure 12x6, so you purchase a 12x6. Vent cover dimensions are categorized by the neck and not by the face of the air vent cover.
- The method of installation of our modern air ac vent cover is hidden through the pre-drilled holes inside of the diffuser, which can be accessed by opening the dampers and using a drill with a six-inch extension to screw it into place. Please find attached our instructional videos. This way we avoid having a front drill screw and ruin the esthetics of the product.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Texas Buildmart |
| Item Weight | 9.83 pounds |
| Product Dimensions | 37 x 3 x 12 inches |
| Item model number | PLB--36- |
| Is Discontinued By Manufacturer | No |
| Color | Silver |
| Finish | Finished |
| Material | Metal |
| 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 |

## Images

![BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - (1 Slot) Single Slot] Premium Insulated Galvanized Sheet Metal Plenum Box for Heating and Cooling - Texas Buildmart - Image 1](https://m.media-amazon.com/images/I/515ir33qujL.jpg)

## Questions & Answers

**Q: What does a Linear Slot Diffuser do? What are Linear Slot Diffusers used for? What is a Slot Diffuser?**
A: 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.

**Q: Are Linear Slot Diffusers good?**
A: 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.

**Q: How do I choose a Linear Slot Diffuser?**
A: 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

**Q: What sizes do vent covers come in? What is the standard vent cover size?**
A: 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.

## Frequently Bought Together

- BUILDMART - 36" Plenum Box for [36" Linear Slot Diffuser - (1 Slot) Single Slot] Premium Insulated Galvanized Sheet Metal Plenum Box for Heating and Cooling - Texas Buildmart
- BUILDMART - 36" Linear Slot Diffuser - (1 Slot) Single Slot - White Decorative Air Vent - Modern AC Vent Cover for Ceiling, Walls & Floors - Texas Buildmart
- BUILDMART - 36" Linear Slot Diffuser - (1 Slot) Single Slot - Black Decorative Air Vent - Modern AC Vent Cover for Ceiling, Walls & Floors - Texas Buildmart

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-03-09*