The Halls Magnum is a truly impressive structure is 8² wide and comes in four different lengths. The vast working area (ranging from 6.3 sq.m to 10.9 sq.m) offers a variety of possibilities for storage and growing. The Halls Magnum greenhouse comes with at least 2 roof vents, base as an option, and can be upgraded to powder coated frame and a choice of glazing options. The aluminium framework has a Halls 15 year guarantee. Free delivery and installation available on request.