What Is a Non-Vision Grille? Specs and How to Specify One
A non-vision grille is built to block direct sightlines through the opening entirely, for locations where seeing through isn't acceptable. Specs, applications, and how to specify one.
A non-vision grille is an HVAC air terminal built to block direct sightlines through the opening entirely, rather than just reducing them. Goodwind manufactures the Non-Vision Grille (model G-NVG) in aluminum, steel, or custom material, for commercial, residential, and industrial projects.
Non-Vision Grille Specifications
| Spec | Detail |
|---|---|
| Model | G-NVG |
| Material | Aluminum, steel, or custom |
| Finish | Powder coated, anodized, or custom colors |
| Mounting | Wall, ceiling, duct, or floor |
| Applications | Commercial, residential, industrial |
Where Non-Vision Grilles Are Used
Where a double louver grille reduces sightline but still leaves a partial view through, a non-vision grille is built to block it completely, so the opening reads as a solid surface even though it still passes air. This makes it the choice for locations where seeing through to equipment, storage, or service areas behind the grille isn't acceptable, regardless of the cost to free area.
How to Specify a Non-Vision Grille
For MEP Consultants at the Design Stage
Specify non-vision where the drawing calls for a fully blocked sightline, not just a reduced one, and confirm the required free area against the opening's airflow duty, since a fully blocked sightline costs more free area than a double louver or single-row grille. Where a partial view is acceptable, a double louver grille will generally pass more air for the same face size.
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. Double-check that the drawing calls for non-vision specifically and not a standard louver grille, since the distinction matters for the opening's intended purpose.
FAQ
What is a non-vision grille used for?
It's used where the opening needs to fully block sightlines through to whatever is behind it, such as equipment or service areas, while still passing air.
How is a non-vision grille different from a double louver grille?
A double louver grille reduces the sightline but can still leave a partial view through. A non-vision grille is built to block it completely.
Can non-vision 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.
What materials are non-vision grilles made from?
Aluminum, steel, or custom material.
Need a fully blocked sightline on a visible opening? Contact Goodwind for technical input, or see our double louver grille guide for a partial-block option.