What Is a Perforated Grille? Specs and How to Specify One
A perforated grille uses a uniform pattern of holes punched into a metal sheet, giving a clean architectural look alongside airflow. Specs, applications, and how to specify one.
A perforated grille is an HVAC air terminal made from a metal sheet punched with a uniform pattern of holes, rather than blades or an open grid. Goodwind manufactures the Perforated Grille (model PF-BG) in aluminum, steel, or custom material, for commercial, residential, and industrial projects.
Perforated Grille Specifications
| Spec | Detail |
|---|---|
| Model | PF-BG |
| Material | Aluminum, steel, or custom |
| Finish | Powder coated, anodized, or custom colors |
| Mounting | Wall, ceiling, duct, or floor |
| Applications | Commercial, residential, industrial |
Where Perforated Grilles Are Used
The punched-hole pattern gives a perforated grille a cleaner, more uniform appearance than a bladed or eggcrate grille, which makes it a common choice where the grille is visible and appearance matters as much as airflow, such as feature walls, lobbies, and retail fit-outs. It works for both supply and return air, though the hole pattern and open area should be matched to the airflow volume the opening needs to handle.
How to Specify a Perforated Grille
For MEP Consultants at the Design Stage
Confirm the required free area against the airflow volume for the opening; a denser hole pattern looks cleaner but passes less air for the same face size. Where the grille sits in a visible architectural location, coordinate the finish and hole pattern with the design team early rather than treating it as a standard back-of-house grille.
For Contractors at Procurement Stage
Confirm the mounting method and finish against the drawing before ordering, since the grille is manufactured to the specified size rather than stocked in fixed dimensions. Check whether the hole pattern or perforation density is called out specifically, since this affects both appearance and airflow.
FAQ
What is a perforated grille used for?
It's used for both supply and return air openings where a clean, uniform appearance matters, such as visible architectural locations, alongside standard HVAC ventilation duty.
Can perforated grilles be custom sized and finished?
Yes. They're manufactured in a range of sizes and finishes, including powder coating and anodizing, to match project requirements.
Are perforated grilles suitable for both supply and return air?
Yes, though the hole pattern and open area should be matched to the airflow volume the opening needs to handle.
What materials are perforated grilles made from?
Aluminum, steel, or custom material.
Specifying a visible grille location? Contact Goodwind for technical input, or see our egg crate grille guide for high free-area return air openings.