Rytons A1® Fire-rated External Weather Louvre 47mm deep x 45° blades plus 25mm wide fixing flange with screw holes. Rear frame: Custom width x height (refer to drawing). Note: Rytons recommend measurements 5mm smaller than the size of the aperture/duct for installation clearance. Any measurement over 1200mm will require the unit to be manufactured in sections bolted together. Custom RAL colour in matt, semi-gloss or gloss finish achieving Class A2-s1, d0. Free area formula: Rear frame W x H minus 40%. Properties: Class A1 fire-rated 0.9mm galvanised steel. Class A2-s1, d0 fire-rated RAL colour powder coating. Product Code: A1EWL. Download Drawing.
Rear frame: Width x height required (note: Rytons recommend measurements 5mm smaller than the aperture/duct size. Any measurement over 1200mm will require the unit to be manufactured in sections bolted together):
Quantity required per RAL colour in matt, semi-gloss or gloss finish achieving Class A2-s1, d0:
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