Duct Surface Grilles 20x4 On 12 Inch Duct White Aluminum Metal Vent Cover For HVAC Built To Last Heavy Duty Durable Duct Vent Grille Made To Order With 2-4 Week Production Time No Fuss Install

White Aluminum Duct Surface Grille 20x4 for 12-Inch Duct
✔️ Pre-order: 2-4 weeks production; heavy-duty aluminum grille

White aluminum duct surface grille designed for 12-inch ducting, 20x4 face, for residential, commercial, and light industrial HVAC. Made to order with 2-4 week production time; gasket sealing and durable build ensure a secure fit.

Face size	Duct size
20 x 4 in	12 in

✅ Size on face: 20x4 inches on a 12-inch duct
✅ Material: white aluminum frame and grille
✅ Airflow control: individually adjustable blades; optional face scoop
✅ Installation: gasket sealing; counter-sunk screw holes for easy fitment
✅ Applications: residential, commercial, and light industrial HVAC

💡 What is a duct surface grille used for in residential and commercial HVAC systems? Handy guide to airflow control and balance in ductwork.

- Directs air flow for even distribution in supply ducts
- Aids pressure balance and room comfort across spaces
- Works with 12-inch duct systems and white aluminum frames
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