The slot ventilator is to be surface mounted on all types of windows and is available in any size and finish for slot heights up to 12 mm. The vent VT12 allows for upward ventilation, this to avoid undue draught, and is available for controllable ventilation.
A special hood PHD12 is designed to be surface mounted upside down to provide upward deflected air for permanent ventilation. The hood HD12 offers weather protection and is available with 2 types of fly screen : 3 x 4 mm or 8 x 6 mm apertures (for domestic fuel burning applications).

Details and solutions

Slot height	Routing details	2000 mm²	4000 mm²
10 mm	Vent length	250 mm	465 mm
	Hood length	230 mm	455 mm
	Slot width	200 mm	200 mm
	N° of slots	1	2
	N° of bridges	0	1
	Bridge width	0 mm	15 mm
11 mm	Vent length	230 mm	430 mm
	Hood length	210 mm	410 mm
	Slot width	182 mm	182 mm
	N° of slots	1	2
	N° of bridges	0	1
	Bridge width	0 mm	15 mm
12 mm	Vent length	220 mm	400 mm
	Hood length	200 mm	380 mm
	Slot width	167 mm	182 mm
	N° of slots	1	2
	N° of bridges	0	1
	Bridge width	0 mm	15 mm