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B 100mm

Ventilation Ducting  | Grille & Plenum Boxes | Rectangular & Bespoke Grille Boxes  | Side Entry Grille Boxes | A 300mm |  B 100mm



300mm x 100mm Side Entry Grille Box
GBSE300-100


Use the drop down menu below to select the spigot size required. Spigot size determines height and will therefore determine price. Height will be determined as spigot size + 100mm by default. Use the 'Other info' box if you need to specify a different height. If required you can also switch the spigot to the adjacent face of the box using the 'Spigot location' drop down.

There is also the option to include the 20mm flange at the bottom of the box (not required with diffuser style grilles).

What are suspension lugs?

If you need to fine tune the size please use the 'Other info' box.

Please allow 1-4 days on all grille boxes.





Spigot size


Spigot Location


Include flange?
Yes No


Include suspension lugs?
Yes +£4.96
No +£0.00


Include 6mm Acoustic Lining
No +£0.00
Yes +£9.29




Any other info or specific requirement (optional):



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300mm x 100mm Side Entry Grille Box

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