This system is used when regular ventilation is required. It can be mounted within the 'staff beads' of a vertical sliding sash window, allowing the lower panel to be opened and enabling the retention of working internal shutters. This is an important priority when satisfying the requirements of Conservation Officers.
Our Slimline System offers the ideal solution for those wanting to benefit from modern standards of noise, heat retention and security but without compromising the character of their building. An ultra-thin lightweight framework means its visibility is kept to an absolute minimum to the extent where you have to look very closely to 'spot the difference' in the before and after views.