Bayliss MK 7 Vent Opener Garden garden trays The roof vents can be

The roof vents can be opened manually or purchase the greenhouse with one automatic opener which will open one of the roof vents based on the temperature

With a planting depth of 1ft 3½in

Specifications

If you which to connect the water butt to a downpipe then you will need to purchase a Guttermate Rain Diverter (see you may also like below)

Height: 1ft 8 inches / 50

Bayliss MK 7 Vent Opener Garden garden trays The roof vents can beSuitable for use on nearly all greenhouses this Bayliss MK7 is an extremely reliable, British made, automatic vent opener. The bayliss Mk7 vent opener is operated by a stainless steel cylinder containing a mineral wax which expands with heat; this pushes a piston causing the vent to open. As the temperature falls the wax contracts and a strong stainless steel spring closes the opener. Bayliss guarantee their openers for 2 years but if anything should