Allvent Gravity Shutter

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Stops back draught and rain penetrationKeeps out vermin when not in use External wall ventilation shutter Model: GGR Series Model Code Duct Size A B GGR100 ALV22332 100 140 8 GGR12 0/125 ALV22333 125 160 8 GGR150 ALV22334 150 198 8 GGR200 ALV22335 200 254 14 GGR250 ALV22336 250 299 14 GGR315 ALV22337 315 391 14 Show more