550mm Grilles
Looking for 550mm grilles and diffusers? This page collects every 550mm product in our catalogue — wall grilles, ceiling grilles, plastic grille boxes and external louvres — so a complete, matching setup can be ordered in one go. Matching the neck size to your duct or spigot ensures a proper fit first time.
Spend over £400 ex VAT and UK delivery is free. Stocked items ordered before 3pm are dispatched for next-working-day delivery.
Showing all 15 results
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Eggcrate Grille with Damper – 550mm x 550mm Neck (595mm x 595mm Face)
£80.15 + VAT Add to basket -
Square Weather Louvre – 550mm x 550mm
£57.86 + VAT Add to basket -
Grille Box (Plenum Box) – 550mm x 550mm x 100mm
£17.60 + VAT Choose Options -
Grille Box (Plenum Box) – 550mm x 550mm x 150mm
£17.60 + VAT Choose Options -
Grille Box (Plenum Box) – 550mm x 550mm x 200mm
£17.60 + VAT Choose Options -
Grille Box (Plenum Box) – 550mm x 550mm x 250mm
£17.60 + VAT Choose Options -
Grille Box (Plenum Box) – 550mm x 550mm x 300mm
£17.60 + VAT Choose Options -
Grille Box (Plenum Box) – 550mm x 550mm x 315mm
£17.60 + VAT Choose Options -
Grille Box (Plenum Box) – 550mm x 550mm x 355mm
£17.60 + VAT Choose Options -
Grille Box (Plenum Box) – 550mm x 550mm x 400mm
£17.60 + VAT Choose Options -
Grille Box (Plenum Box) – 550mm x 550mm x 450mm
£17.60 + VAT Choose Options -
Grille Box (Plenum Box) – 550mm x 550mm x 500mm
£17.60 + VAT Choose Options -
Single Deflection Grille – 550mm x 550mm Neck (595mm x 595mm Face)
£73.70 + VAT Add to basket -
Double Deflection Grille – 550mm x 550mm Neck (595mm x 595mm Face)
£94.00 + VAT Add to basket -
Eggcrate Grille – 550mm x 550mm Neck (595mm x 595mm Face)
£28.04 + VAT Add to basket