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Trickle vents included as standard.
From the 15/06/2022, the Building Regs state that trickle vents are required on practically all glazing elements. We will include as many trickle vents as feasibly possible as standard. On aluminium flush windows, trickle vents are fitted into a 35mm add-on above the outer frame. If a certain rate of 'equivalent area' is required please include instructions. If trickle vents are not required, please tick below. Please note trickle vents cannot be retro-fitted.
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