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This is an extension kit to the Grand Gro Greenhouse, extending the greenhouse by 2,86m at a time.
It includes two roof vents with the base frame extension.
6mm Polycarbonate panels and 1.3mm thick aluminium frame – the same as the Grand Gro kit
This extension can be added on at the time of assembly of the main greenhouse, or can be added at a later stage to lengthen the greenhouse.