Please note we are currently unable to dispatch to Northern Ireland.

Please note that grilles and louvres made to order have a current lead time of 10-12 working days. We have been informed by the manufacturer that this is due to a material shortage. We apologise for the inconvenience this may cause.

Square Top Entry Grille Boxes

Ventilation Ducting  | Grille & Plenum Boxes |  Square Top Entry Grille Boxes



Manufactured to order from 0.7mm or 0.9mm galvanised mild steel depending on size. Grille boxes are available with or without a 20mm flange at the open end. Most grilles require this flange; egg crate, single and double deflection for example are generally always screwed through the front face into the flange on the box. Diffusers however, do not require this flange as the boxes are commonly fixed to the grille through the side of the grille box.

Spigot size must be smaller or equivalent to box

Note that all grille boxes are open at the bottom.

Please scroll down to see various grille box depths.

For rectangular and side entry grille boxes, please see the Rectangular & Bespoke Grille Boxes section.

100mm Deep Top Entry Grille Box
SGB100






Size



Spigot Size


Include flange?
Yes No




Any other info or specific requirement (optional):



Quantity:



People who bought this item also bought:
1. Spiral Tube - 3m Lengths (Ref: SR)
2. 90° Bends (Ref: B90)
3. Foil Plain Flexible Ducting (Ref: AF)
100mm Deep Top Entry Grille Box

200mm Deep Top Entry Grille Box
SGB200






Size



Spigot Size


Include flange?
Yes No




Any other info or specific requirement (optional):



Quantity:



People who bought this item also bought:
1. Male Couplers (Ref: NP)
2. Male Couplers - Stainless Steel (Ref: NS-K)
3. Suspension Rings with EPDM Rubber (Ref: RSUR)
200mm Deep Top Entry Grille Box

300mm Deep Top Entry Grille Box
SGB300






Size



Spigot Size


Include flange?
Yes No




Any other info or specific requirement (optional):



Quantity:



People who bought this item also bought:
1. Spiral Tube - 3m Lengths (Ref: SR)
2. Foil Plain Flexible Ducting (Ref: AF)
3. Male Couplers (Ref: NP)
300mm Deep Top Entry Grille Box

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