External weather louvre to suit an aperture / hole / plenum or grille box with dimensions 450mm x 450mm or 45cm x 45cm or 18" x 18" - So the over flange dimensions are bigger Made from Aluminium Extrusion c/w bird guard - Mill finish Variety of uses both internally and externally - Can be mounted in a Wall, Ceiling, Floor and even Doors or Windows Actual scale / appearance of this item may differ to the picture used on this listing
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