SS 16" Defender Friction Hinge - Top Hung | From The Anvil Finish:Stainless Steel These air vent covers are

These air vent covers are fully operational with opening/closing vents that will enable the user to stop cold air entering the room should the wind be in the wrong direction

Suitable for use on 30/60 minute fire doors

400mm Long x 70mm wide

3" Holder Diameter: 8 cm / 3

Supplied beautifully package in its own cream and black presentation box

SS 16" Defender Friction Hinge - Top Hung | From The Anvil Finish:Stainless Steel These air vent covers areOur defender friction hinges have an accurate closure and smooth operation. Suitable for wood, UPVC, and aluminium windows. Tested to thirty thousand cycles. Effective weather proofing and active proofing with plastic ends. Sold in pairs without screws.