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calimaero WGQ 150x150mm - Aluminium Weather Protection Grille Fixed Louvred for Inside / Outside Assembly Exhaust Air Grille with Insect Protection, Robust, Weatherproof / Square Size 165x165, Anodized Aluminum : Amazon.co.uk: DIY
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Exhaust return air grille detail is given in this 2D AutoCAD DWG file. Downlaod the 2D Autocad DWG drawing file. - Cadbull
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