Ventomax Automatic Roof Vent Opener Toughened Glass switch between heating and fan

switch between heating and fan modes and more

12ft Wide Rhino Glazing Plan

taking up very little floor space (in fact the space of just three seed trays)

A sunny day will see temperatures inside the greenhouse rapidly rise and this can cause damage to your seedlings and cuttings

Capable of heating greenhouses up to 8x14 in size and keeping a greenhouse up to 12x20 frost free

Ventomax Automatic Roof Vent Opener Toughened Glass switch between heating and fanThis reliable and effective automatic opener will open and close your greenhouse roof vent far better than you could ever achieve manually. This model is not designed to be removed during the winter months although it is still possible with a little work.