6"w X 6"h Adjustable AIR Supply Diffuser - HVAC Vent Cover Sidewall or Ceiling - Grille Register - High Airflow - White [Outer Dimensions: 7.75"w X 7.75"h]
White air vent grille aluminum alloy return air grilles air supply diffuser HVAC duct ventilation louvre cover square 245 450mm| | - AliExpress
Grille and Diffuser – Duct Asia Engineering Co., Ltd.
HVAC White Aluminium AC Grill Diffuser, Linear, Shape: Rectangle at Rs 150/square feet in New Delhi
150x600mm CEILING LINEAR GRILLE DIFFUSER | 3D Warehouse
Grilles, Registers & Diffusers | Greenheck
Linear Diffuser & Grilles : LBG - Linear Bar Grilles
HVAC GRILLS & DIFFUSER – Zephyr AC Spare Parts Trading LLC