4x12 White Premium Aluminum Linear Slot Diffuser – Modern Design (Duct Opening)
Regular price $38.79- 2-slot design — clean architectural look
- Adjustable Deflector Bar — direct airflow left, right, both sides, or fully closed
- Solid alloy aluminum — rust-resistant, zero plastic parts
- Wall, ceiling, or low-traffic floor compatible
- 5-minute drop-in install — no drywall or duct modification
A 4x12 linear slot diffuser for supply air — not a louvered floor register. If you're comparing sizes, see our full 4x12 vent covers guide for how this differs from a traditional register.
Will a 4x12 Fit Your Space?
| Feature | Specification |
|---|---|
| Duct Opening Size | 4" × 12" |
| Neck Size | 3-3/4" × 11-3/4" |
| Overall Face Size | 5-3/4" × 13-3/4" |
| Weight | 1.5 lb |
| Material / Finish | Alloy aluminum, white powder-coated (paintable) |
| Compatibility | Supply air, wall/ceiling/floor |
| Included | Diffuser, Deflector Bar, screws, manual guide card |
Installation
- Remove your old cover and confirm the duct opening measures 4" × 12".
- Mount with the included screws through the hidden side holes.
- Use the Deflector Bar to set airflow direction.
Frequently Asked Questions
What size do I order — 4x12 or face size?
Order by duct opening size (4" × 12"). The face size (5-3/4" × 13-3/4") overlaps the opening.
Is this a floor register?
No — it's a linear slot diffuser with a fixed slot face, not a louvered register with external blades.
Is this for supply air or return air?
Supply air, with adjustable airflow. For return air, see the Return Air Vents collection.
Can I install this on a ceiling?
Yes — mounts on walls, ceilings, or low-traffic floors.
When will this be back in stock?
This size is temporarily out of stock. Contact support@greenvent.us for restock updates, or see the Black version, which is in stock.
Explore Related Products
- Black finish (in stock): 4x12 Black Linear Slot Diffuser
- All sizes: Linear Slot Diffuser collection
