After months of research, finally ordered a greenhouse kit in mid-July, 2001, from Gothic Arch Greenhouses. The kit is manufactured by National Greenhouse and is for a 12 x 20' "Grand Hideaway," to be mounted on a kneewall. It is glazed with 8 mm twinwall polycarbonate, and because of that I had to settle for straight eaves, rather than the curved eaves I would have preferred; I decided a lower heating bill was more important than appearance!

Three features of the National greenhouse swayed my final choice: the socket hinge for the ridge vent, and the sturdiness (1-3/4") and offset placement of the door: