Extend the length of any Rion Greenhouse or Sunroom!
Easily add lots more working space and square footage for all your growing
needs with a Rion Extension Kit.

Questions? Please feel free to call us! 1-866-448-8229

Rion Greenhouse Extension Kits EcoGrow Extension Kit 2'6" - Green Frame, 6mm Side Panels, 4mm Roof Panels, 1 Roof Vent, 1 Manual Vent Opener $300.00 Free Shipping Add to Cart Majestic Extension Kit 4'1" - Green Frame, 6mm Side Panels, 4mm Roof Panels, 1 Roof Vent, 1 Manual Vent Opener $450.00 Free Shipping Add to Cart Green Giant Extension Kit 4'1" - Green Frame, 6mm Side Panels, 4mm Roof Panels, 1 Roof Vent, 1 Louver Window, 1 Manual Vent Opener $600.00 Free Shipping Add to Cart Green Giant Extension Kit 4'1" PREMIUM PACKAGE - Green Frame, 6mm Side Panels, 4mm Roof Panels, 1 Roof Vent, 1 Louvre Window, 1 Manual Vent Opener $970.00 Free Shipping Add to Cart Prestige Extension Kit 4'1" - Green Frame, 6mm Side Panels, 4mm Roof Panels, 1 Roof Vent, 1 Louver Window, 1 Manual Vent Opener $650.00 Free Shipping Add to Cart Prestige Extension Kit 4'1" PREMIUM PACKAGE - Green Frame, 1mm Side Panels, 4mm Roof Panels, Base extension, gutter extension, 1 side louvre window, 1 louvre window auto-opener, 1 roof window (vent), 1 roof window auto-opener, 1 two-tier staging table. $1000.00 Free Shipping Add to Cart Hobby Gardener Extension Kit 4'1" GREEN FRAME - 4mm Side & Roof Panels, 1 Roof Vent, 1 Manual Vent Opener. $450.00 Free Shipping Add to Cart Hobby Gardener Extension Kit 4'1" WHITE FRAME - 4mm Side & Roof Panels, 1 Roof Vent, 1 Manual Vent Opener. $450.00 Free Shipping Add to Cart Sunroom Clear Extension Kit - 2'1/2" WHITE FRAME - Clear Acrylic Side Panels, 4mm Roof Panels $240.00 Free Shipping Add to Cart Sunroom Clear Extension Kit - 2'1/2" GREEN FRAME - Clear Acrylic Side Panels, 4mm Roof Panels. $250.00 Free Shipping Add to Cart Sunroom Dual-Poly Extension Kit - 2'1/2" WHITE FRAME - 4mm Side & Roof Panels, 1 Roof Vent $190.00 Free Shipping Add to Cart Sunroom Dual-Poly Extension Kit - 2'1/2" GREEN FRAME - 4mm Side & Roof Panels, 1 Roof Vent $200.00 Free Shipping Add to Cart

Base Extension Kits EcoGrow - 2' 6" Base Extension Kit $50.00 Free Shipping Add to Cart Majestic, Hobby Gardener, Green Giant, Prestige - 4' 1" Base Extension Kit $75.00 Free Shipping Add to Cart Sunroom - 2' 1/2" Base Extension Kit $50.00 Free Shipping Add to Cart

*Shipping costs are calculated for orders shipped within the lower 48 states. If order is being shipped to anywhere other than the lower 48 states, additional shipping costs may apply. Contact our Customer Service Help Desk for questions.