Abstract: A closure assembly for a greenhouse has a first piece connectable to the roof, and a second piece connectable to the wall. The first piece is connectable to the second piece to form a pivotable joint therebetween for forming a joint between the roof and the wall. A shading system extends between purlins mounted over roof rafters, and vent screens and vent operators are mounted below glazing bars extending over the purlins.

Abstract: A containment structure for providing fluid tight seals between translucent panels and a frame and between the frame and an adjoining structural member. The containment structure includes an L-shaped gasket for providing a seal on a first side of the translucent panel, an upper gasket for providing a seal on a second side of the translucent panel, one or more connector plates for connecting the frame to an adjoining structural member, a structural carrier gasket for providing a seal between the frame and an adjoining structural member and a connector plate gasket for providing seals between the one or more connector plates and the adjoining structural member.