Dimensions of the Grille Distribution Box
Distribution box grilles typically range in size depending on type, with standard lengths and widths from 125 mm to 600 mm and depths from 125 mm to 250 mm, adjustable for duct connections and installation requirements.
Standard Sizes and Types
- Plastic grille boxes: Commonly square-shaped, with depths around 125 mm, and available in various lengths and widths to match duct or ceiling openings. They are lightweight, impact-resistant, and non-corrosive, suitable for swirl diffusers or standard air distribution ( ).
- Zehnder ComfoCase TVA grille boxes: Designed for connecting 1 or 2 ComfoTube 90 hoses, available in straight or angled versions, single or double, with a 125 mm sealing lid. Drill hole diameter for installation is typically 130 mm ( ).
- Metal or aluminium grilles: Frames can have borders of 23 mm or 27 mm, with horizontal or vertical blades, and are available with concealed screw fixing or spring clip options. Depths and duct opening sizes vary depending on the model ( ).
Distribution Box Variants
- TOP series distribution boxes (TOP-TS, TOP-TF, TOP-LS, TOP-PS, TOP-PF, TOP-S) range from 1-way to 36-ways, with dimensions specified in length, width, and height according to the number of ways and mounting requirements ( ).
- Electrical distribution boxes: Plastic or metal enclosures for power distribution, typically flush or surface-mounted, with dimensions varying by amperage and number of circuits, often in the range of 200–600 mm width and 150–400 mm height ( ).
Installation Considerations
- Grille boxes can be cut to length or customized to fit specific duct sizes.
- Mounting options include ceiling, wall, or floor, with brackets or subframes for secure installation.
- Acoustic insulation or airflow straighteners can be added depending on the application.
In summary, distribution box grilles are highly modular, with standard depths around 125 mm, widths and lengths adjustable from approximately 125 mm up to 600 mm or more, and installation options tailored to duct type, grille style, and airflow requirements ( ).
Industry Grille Boxes | Grilles & Louvres | AMS Ducting Supplies
Grille Boxes are essential components in HVAC systems, designed to house and support grilles, diffusers, and registers. These
Industry T_1-1_1_EN_2(1-24)GitterBaender
Aluminium Grilles Construction · Dimensions · Materials Type AGS (non-vision grille/door grille) Non-vision grilles type AGS are
Industry Grilles, Registers, Diffusers, and Air Terminal Units
Models are engineered for supply air distribution in critical environments such as chem. labs and clean rooms. Radial diffusers create
Industry Systemair
ODEN is an insulated plenum box developed for use with NOVA grilles. The product is installed at the end of circular ducts and
Industry Diffuser Size and CFM Selection Guide | PDF
This document provides guidelines for selecting air outlet and inlet components based on airflow ranges. It includes specifications for
Industry DISTRIBUTION AT THE HEART OF POWER
Distribution is an essential function for the electrical panels, as well as for control and circuit protection. As well as purely technical
Industry Designing Duct System Vents for Good Airflow
The grille area, then, would need to be 1,000 cfm / 400 fpm = 2.5 square feet. That''s 360 square inches, so a 19″ x 19″
Industry Products
Home arrow_forward_ios Products arrow_forward_ios Air Distribution Filtered Results: 17 Products arrow_circle_up
Industry Titus HVAC | Engineering Innovative Air Distribution Solutions
Steel Aeroblade Single Deflection Supply Grille, 1.25" spacing, Blades Parallel to Long Dimension
Industry Plenum Box For Grilles
The plenum boxes for Grilles constitute an easy and cost-effective way to connect the grilles back to
Industry grille-options
When ordering plenum boxes please specify length, width & height, spigot size and position (Top or Side Entry) and control options.
Industry Plenum Boxes 12
Introduction Correct selection and sizing of distribution plenum chambers is critical because grille air resistance is very low relative to
Industry Distribution | Legrand E-catalog International
Aluminium Copper Distribution box - 120 mm² - 300 A max. Compare ADD TO PROJECT LEGRAND
Industry Grille & Plenum Boxes | Grilles & Louvres | Ducting | Buy Online
Rectangular & Bespoke Grille Boxes Please use this product if you want to define the dimensions of a rectangular or bespoke grille
Industry Grille & Plenum Boxes | Grilles & Louvres | Ducting | Buy Online
Please use this product if you want to define the dimensions of a rectangular or bespoke grille or plenum box to your exact
Industry Distribution Box
Metal Distribution Box Features Continuously welded seams Foam-in-place seamless gasket 120-degree opening heavy-duty
Industry Ventilation grilles | TROX Middle East (LLC)
The new X-GRILLE Cover ventilation grilles, made of high-quality aluminium combine function with an attractive design; they can be
Industry Grilles, Registers and Diffusers
Oversized units made in multiple sections, Listed Size each with full flanges.
Industry Standard Grille CFM Reference Chart
It lists standard double deflection supply grilles, eggcrate return grilles, fixed bar return grilles, lay-in diffusers, and their equivalent
Industry Sizing Return Grilles
According to this rule of thumb, the return grille I picked at 30×12 would be 360 square inches X two = 720 CFM. In the
Industry Grilles, Registers, Diffusers, ATU Handbook, R6 May 2025
Grilles, Registers, Diffusers, and Air Terminal Units Handbook May 2025 TABLE OF CONTENTS
Industry Grille Boxes | Galvanised Steel Grille Boxes | Buy Online at Ductstore
Manufactured to order from 0.7mm or 0.9mm galvanised mild steel depending on size. Grille boxes are available with or without a
Industry Krueger-HVAC: Providing You With Air Distribution Solutions
Product Demo: Grille Blade Adjustment See the differences between airflow patterns after adjusting blade positioning (entrained jets
Industry Area distribution boxes with connectors
4.1 Characteristics of the materials The area distribution box associated with the copper or optical feedthrough sockets allows total
Industry Zehnder grille box ComfoCase TVA-P
The Zehnder ComfoCase TVA grille boxes (plenums) are the connecting elements between 1 or 2 ComfoTube 90 air distribution
Industry Grille and Louvre Measurements: A Practical Guide
Special Grilles Four-Way Diffusion Grille: This grille sits in the ceiling and deflects air in four directions. It often
Industry Plenum for grille, Halton BDR. Wide range of dimensions.
The Halton BDR plenum is connected to the distribution ductwork with a spigot. When equipped with a measurement and adjustment
Industry Plastic Grille Boxes
Plastic Grille Boxes, Plenum boxes available in various sizes to fit 4-Way Diffusers. Each grille box features multi-sized spigot.