Rafal Kaczynski
Dear Lorraine Trickle vents are Described as ‘a small ventilation opening designed to provide controllable whole building ventilation. Background ventilation via trickle ventilators provides the building with the facility for secure, draught free ventilation. Background ventilation should ideally be positioned 1.7m above floor level, to avoid noticeable draughts, trickle vents are ideal for meeting this requirement. Various devices can be used to open and close vents to suit the activities of the inhabitants of the room/building. There is so many different vents which can be fitted ; - Through Frame Design; The trickle vent is often positioned through the head of the frame - Gllazed in; Sometimes it is necessary to fit the trickle vent into the glazed area along the top of the sealed glass unit - Over Frame Design : On some occasions it is not possible to fit the trickle vent through the frame, therefore ventilation can be routed over the frame or head of the window - Different framing materials: Trickle vents can be fitted in all window framing materials, PVC-u,Timber, Steel or Aluminium. - Easily controllable : Because trickle vents are usually situated above the window, some vents can be controlled by cords or rods or simply by hand I hope tis can help Best regards Rafal
