Primex WGX Series True-Flow Ceiling Grilles

The Primex True-Flow Ceiling Diffusers (WGX Series) are durable, highly-adjustable air supply or exhaust vents. The ceiling mountable Series provides whisper-quiet airflow in an unobtrusive and aesthetically pleasing housing. Pair the 4-inch model with the EB4x90 for installation in tight spaces.


• Dual flow: whisper quiet air supply or exhaust with four-wing screw to adjust air flow from 0-100%.
• Increased air flow over the WG Series.
• Added security of mounting screws through base flange.
• Snap-on trim ring to hide mounting screws and hole trim is included.
• Long-lasting durability with UV-protected, impact resistant, Polymer resin.
• WGX4S vent (with shorter collar) is compatible with Primex’s squeeze elbow accessory (EB4x90) and 4-inch diffuser sleeve (DS Series).
• Easy to install and remove.

model description usually ships price QTY
WGX4S Primex premium adjustable diffuser. 4 inch size. Short collar. White color. Backorder $10.40
WGX5 Primex premium adjustable diffuser. 5 inch size. White color. 1 Day. In-stock $11.90
WGX6 Primex premium adjustable diffuser. 6 inch size. White color. Backorder $13.90
WGX7 Primex premium adjustable diffuser. 7 inch size. White color. 1 Day. In-stock $20.90
WGX8 Primex premium adjustable diffuser. 8 inch size. White color. 1 Day. In-stock $21.80
DC4 Primex terminator diffuser collar. For 4 inch grilles. 1 Day. In-stock $8.90
DC5 Primex terminator diffuser collar. For 5 inch grilles. Backorder $9.70
DC6 Primex terminator diffuser collar. For 6 inch grilles. 1 Day. In-stock $10.80
EB4X90 Primex 4 inch 90 degree Squeeze Elbow. For 2x4 wall and ceiling spaces. 1 Day. In-stock $5.10
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Primex WGX grilles

Primex DC Collar

Do you have questions about the products on this page?

Click on the ? image on the left or this link to ask us your questions!
#1 Q:   What are the cfm flow rates at a specified static pressure? Or do you use a certain number of supplies per ton. I have a 3 ton Heat pump system to duct from the attic to the first floor.
A:   The spec sheet here: will be as much info as we have. Not seen actual airflow data on these, but that sheet indicates open area for calculations.

       Asked on 2023-05-08 by DLS
#2 Q:   Can this ceiling grille be used in a wall application?
A:   Sure. Its a generic grille and can be used in ceilings and walls.

       Asked on 2021-05-12 by AT

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why buy from us?

We're engineers passionate about home ventilation and serious about customer service – so you can count on us for carefully-selected equipment and expert advice to ensure your project is a success from specification to installation.

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