retro-fitting trickle vents in uPVC windows

MAP Aluminium SlotTrickle Vent - White - 275mm trickle slot vent The white screw in EasyVent is made from Acrylonitrile Styrene Acrylate which is a much more tough and durable plastic than PVC front door mailbox slot Trickle vents are used extensively in the UK and Europe integrated into window frames to provide minimum ventilation requirements for naturally ventilated

apk slot zeus olympus What are trickle vents? A trickle vent is a small slot usually situated just above a window or a door what are trickle vents What do trickle vents do? Trickle