Halls have integrated cast iron joints at the eaves and ridge as well as a thick box-section ridge bar to give this greenhouse the strength to stand up to whatever our glorious UK weather can throw at it. The Magnum also benefits from a nice high ridge at 8ft 5” that will give you plenty of options when it comes to growing taller plants as well as a door height of 5ft 11” that becomes 6ft 4” with the optional steel base, giving taller gardeners more headroom so they won’t constantly be bumping their heads!