NorDan's optional integral trickle vent is available to order for the NTech 1.2 range of windows and doors. The trickle vent allows free flow of air even when the window is closed.The adjustable trickle vent is positioned at the head of the frame to ensure good air circulation within the room. Being independent of the sash, it can operate even when the window is securely closed. What's more, because the ventilation system is fully integrated, there is no unsightly external vent hood for standard opening windows. |
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