Riverstone | MONT Standard 4' x 8' Greenhouse Extension Kit

Riverstone Industries


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No Sales Tax (except in GA)

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Before you Purchase has several things to consider before ordering a large greenhouse or building. You should also review our Refund Policy.

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Estimated Arrival: Between Jul 20 and Jul 27.

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The MONT 4 foot extension kit is specifically designed for the MONT line of greenhouses. The idea is simple, as your gardening greenhouse needs grow so can your greenhouse. The 4 ft extension kit allows for the expansion of your greenhouse. Each 4ft extension kit includes a 2ft x 2ft roof vent with automatic opener and gutters. When ordering your extension kit make sure that the color matches your existing greenhouse. It will work with the MONT standard greenhouses.

Dimension: 8.1 ft W x 4.1 ft. L x 7.6 ft. H

Quick assembly construction.

Integrated flush base design. High impact UV stable 8mm twin wall polycarbonate walls and roof. Heavy-duty extruded aluminum frame construction. Black electrostatically painted frame.

One 2' x 2' roof vent with automatic openers. Integrated dual rainwater gutter system.

Full 10 yr warranty (strongest in the industry); Proudly designed and made in the USA!

What's included / What's in the box?

  • All Aluminum framework
  • all PC panels
  • hardware
  • instruction manual
  • screwdriver and wrench

Care Instructions: soapy water

Assembly Required.

Product Length: 48"

Product Height: 90"

Product Width: 97"

Product Width: 67"

Warranty: 10 yr limited warranty

Country of Origin: USA

7 Great reasons to buy from us:

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Questions & Answers

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  • Is it open on both sides

    Yes, this extension kit is open on both ends for you to extend your Monticello greenhouse.