Automatic roof vent opener easily fitted to greenhouse roof vents will increase or reduce ventilation automatically according to the temperature, ensuring the desired balance of heat and humidity. Auto Vent Opener
Cropped head bolts standard 11mm enable shelves, staging etc, to be fixed without dismantling the greenhouse sections. Longer 22mm also available now. 50 Cropped head aluminium bolts nuts
Square head bolts are used in the construction of aluminium greenhouses and used in fixing staging and shelves etc. 50 Square head aluminium bolts nuts