Riga Greenhouses Top Quality German Manufacturing Weather you are a garden hobbyist or a serious greenhouser you can appreciate thequality and craftsmanship of the RigaGreenhouse.With a combination of strong materials and durable hardware, the Riga Greenhouse is by far the strongest greenhouse under five thousand dollars. So, enjoy flowers and vegetables year round or just start the growing season early. Either way, this greenhouse series is sure toexceed your expectations for many years to come. One major Riga Greenhouse advantage is the construction method. The frame profiles are permanently attached to each other, anddo not loosen over time with wind pressure. In addition, the pitch of the roof keeps it clear of heavy snow loads, but those are just a few prominent features. There are so many more: Extremely heavy duty construction All roof windows measure 40W x 24H inches and come with automatic openers Eachwall windows come with adjustment arms Dutch Barn doors come with key locks Heavy-duty rubber seals are used on all windows, doors, and bottom and top of each large side glazing panels Every greenhouse comes with an installationDVD and written instructions Inside walking height: 73 inchesnear shelves and almost 90" in the middle Warranty: Frame 15 years; Glazing 10 years Most assemble in about 1-2 days, with 2 people, depending on model and skill level Bases are optional, andstrongly recommended