Ventomax Automatic Roof Vent Opener Toughened Glass You can also colour match

You can also colour match your seedrack to your Rhino Greenhouse

Control of the temperature is achieved with the 2nd dial

as well as 3 heating intensities and a separate dial for temperature control - with each number increment relating to around 2

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

Ventomax Automatic Roof Vent Opener Toughened Glass You can also colour matchThis 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.