Weather Resistance: Deep, high - angled louvres block rain, snow, and wind, ensuring good ventilation in all weather. 1 x Ventilation Grille. Varied Sizes: Available in 200mm x 200mm, 300mm x 300mm, 350mm x 350mm, 450mm x 450mm, 550mm x 550mm, and 600mm x 600mm to fit different spaces.
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