Westminster 3ft 4" Small Greenhouse (Frame & Shelves)Westminster 3 4 small greenhouse with aluminium frame and toughened glass. Adjustable seed tray shelves. 3 4 (1. 0m) long lean to small greenhouse Ultra narrow greenhouse design 4mm toughened safety glass 25 year framework guarantee 5 adjustable seed tray shelves The Westminster 3 4 small greenhouse features an ultra narrow greenhouse design and is the smallest greenhouse we manufacture. Designed around a standard seed tray, depth from the wall is