Bayliss MK 7 Vent Opener Garden garden trays With a planting depth of

With a planting depth of 1ft 3½in

Shelves fit securely into the framework

The zipped access panel allows easy access for watering

This easy-built Caledonian Rectangular Raised Bed from Forest Garden is perfect for growing vegetables

Easy Emptying - due to the clever

Bayliss MK 7 Vent Opener Garden garden trays With a planting depth ofSuitable 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