• Complies with BS 5440 Part 2 & Building Regulations Part J.
• For use mounted over a 13mm or 16mm slot.
• Integral screw covers for concealed fixing.
• Two ventilators supplied per pack (one fitted internally, one fitted externally).
• Supplied with a warning label, screws and fixing instructions.
• Aluminium 6063 HIT T6, component parts PP (UV Stable).
• 3.5mm (No.6) Pan Head Self Tapping or equivalent.
• Equivalent Area: 4,000mm? (40cm?) per unit.

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