---
product_id: 424124963
title: "BUILDMART - 12\" Plenum Box for [12\" Linear Slot Diffuser - (1 Slot) Single Slot] Premium Insulated Galvanized Sheet Metal Plenum Box for Heating and Cooling - Texas Buildmart"
brand: "buildmart"
price: "1002.55 DT"
currency: TND
in_stock: true
category: "Buildmart"
url: https://www.desertcart.tn/products/424124963-buildmart-12-plenum-box-for-12-linear-slot-diffuser-1
store_origin: TN
region: Tunisia
---

# 12" linear slot size precision Hidden screw installation Premium galvanized insulated metal BUILDMART - 12" Plenum Box for [12" Linear Slot Diffuser - (1 Slot) Single Slot] Premium Insulated Galvanized Sheet Metal Plenum Box for Heating and Cooling - Texas Buildmart

**Brand:** buildmart
**Price:** 1002.55 DT
**Availability:** ✅ In Stock

## Summary

> 🔧 Upgrade your airflow game with sleek, insulated precision!

## Quick Answers

- **What is this?** BUILDMART - 12" Plenum Box for [12" 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?** 1002.55 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/424124963-buildmart-12-plenum-box-for-12-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

- • **Sleek Modern Fit:** Designed specifically for 12" linear slot diffusers, ensuring a perfect retrofit for your HVAC system.
- • **Effortless Installation:** Hidden pre-drilled holes allow a clean, screw-in setup without compromising the diffuser’s sleek look.
- • **Versatile Compatibility:** Works seamlessly as both supply and return vent cover, adaptable for remodels and new builds.
- • **Customizable & Ready to Ship:** Available in multiple sizes and colors (paintable too), with fast shipping to upgrade your space instantly.
- • **Premium Insulated Durability:** Galvanized sheet metal with foam insulation for enhanced thermal efficiency and long-lasting performance.

## Overview

The BUILDMART 12" Plenum Box is a premium insulated galvanized sheet metal component designed for 12" linear slot diffusers. It features a precise 6" oval flex duct entry, hidden screw installation for a clean aesthetic, and is compatible with both supply and return air systems. Ideal for modern HVAC upgrades, it offers durability, easy installation, and customizable sizing options to fit contemporary homes and commercial spaces.

## Description

BUILDMART - 12" Plenum Box for [12" Linear Slot Diffuser - (1 Slot) Single Slot] Premium Insulated Galvanized Sheet Metal Plenum Box for Heating and Cooling - Texas Buildmart - desertcart.com

## Features

- Ideal for Texas Buildmart 12" 1 Slot Lineal Slot Diffuser
- Galvanized sheet metal Plenum Box with foam insulation.
- Total Box Dimensions: L: 13 3/16" W: 2 7/8" H: 11 7/8"
- Entry size: 1 entry of 6" 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 |
|---------------|-------|
| ASIN | B09K5XH4Q1 |
| Best Sellers Rank | #554,451 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2,760 in Registers, Grilles & Vents |
| Color | Silver |
| Customer Reviews | 4.3 4.3 out of 5 stars (11) |
| Date First Available | October 23, 2021 |
| Finish | Finished |
| Head Style | Philips |
| Installation Method | Screw-In |
| Item Package Quantity | 1 |
| Item Weight | 4.13 pounds |
| Item model number | 12x1SxPL |
| Manufacturer | Texas Buildmart |
| Material | Aluminum |
| Measurement System | English/Standard |
| Mounting Type | Screw-In |
| Number Of Pieces | 1 |
| Part Number | 12x1SxPL |
| Product Dimensions | 14 x 3 x 12 inches |
| Special Features | Easy to Install |

## Images

![BUILDMART - 12" Plenum Box for [12" 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/61kQEnse8rL.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 - 12" Plenum Box for [12" Linear Slot Diffuser - (1 Slot) Single Slot] Premium Insulated Galvanized Sheet Metal Plenum Box for Heating and Cooling - Texas Buildmart
- BUILDMART - 12" Linear Slot Diffuser - (1 Slot) Single Slot - White Decorative Air Vent - Modern AC Vent Cover for Ceiling, Walls & Floors - Texas Buildmart
- BUILDMART - 12" Linear Slot Diffuser - (1 Slot) Single Slot - Black Decorative Aluminum Air Vent - Heating and Cooling Modern AC Vent Cover for Ceiling, Walls & Floors - Texas Buildmart

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-09-17*