How to retro fit a trickle vent in a uPVC window

A Guide to Trickle Vents trickle slot vent Order Casement Window - Trickle Window Slot Vent Set Inside & Out - 290mm - 2328mm²EA crown slot 88 Trickle vents are used extensively in the UK and Europe integrated into window frames to provide minimum ventilation requirements for naturally ventilated

book of relics slot Window trickle vents are perfect for maintaining natural ventilation Our range of trickle vents provide a small opening in window frames and doors