The BOSMERE ACD Action 305 Glass Greenhouse R305H-B consists of firm closed tubular aluminum profiles and stainless steel bolts and nuts. The appropriate greenhouse for a nice variety of vegetables and herbs! Standard we put 4mm horticultural glass or safety glass in the frame. The sidewalls of the greenhouse are in clear glass, the roof is covered with hammered glass. ACD is a well know Belgian manufacture and supplier of high quality greenhouses & equipment for the home garden and has quite a deserved reputation as the “The greenhouse expert”. 12-ft in length by 8.5-feet high at ridge.