| Canopia Hobby Gardener 2 Twin Wall Greenhouse Resin/Polycarbonate Panels in Green/White | 81.9" H x ... The Hobby Gardener 2 greenhouse, manufactured with 4 mm twin-wall polycarbonate roof panels and 6mm twin-wall side panels, offers superior strength, safety, light diffusion, and great heat insulation. The heavy-duty resin frame is fully UV ... more | Wayfair | $3,199.00 $2,926.95 FREE shipping go to store |