Skip to content
  • 🛍️ Don't miss out on big discounts and free shipping! 🛍️
  • 🛍️ Don't miss out on big discounts and free shipping! 🛍️
Gardening Supplies StoreGardening Supplies Store
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

  • Plant Supports
    • Flower Supports & Trellises
    • Vegetable Supports & Trellises
    • Tomato Cages & Supports
    • Plant Support Accessories
  • Garden Tools
    • Pruners & Loppers
    • Weeders & Cultivators
    • Trowels & Planting Tools
    • Trugs & Harvest Baskets
    • Shovels & Hoes
    • Garden Carts
    • Tool Belts Totes & Organizers
  • Pest & Disease Controls
    • Animal Controls
    • Fences & Barriers
    • Insect Controls
    • Plant Disease Controls
  • Soils & Fertilizers
    • Potting Soil Mixes
    • Fertilizers
    • Soil Amendments
    • Seed Starting Soils
  • Watering & Irrigation
    • Hose Reels & Organizers
    • Sprinklers & Timers
    • Rain Barrels
    • Hoses
    • Irrigation Systems
    • Nozzles & Sprayers
    • Watering Accessories
    • Watering Cans
    • WaterWell Kits & Components
  • Season Extenders
    • Plant Protectors & Row Covers
    • Greenhouse Kits
    • Greenhouse Accessories
    • Cold Frames
  • Best Seller
Season Extenders / Greenhouse Kits
Sale!
MONT Greenhouse Extension, 8' X 4

MONT Greenhouse Extension, 8′ X 4

$366.00 Original price was: $366.00.$95.99Current price is: $95.99.

Clear
SKU: Z2FYZ 8611146 Categories: Greenhouse Kits, Season Extenders Tags: Greenhouse, Greenhouse accessories, Greenhouse kits, Greenhouses, Grow house
  • Prompt service, every time.
  • Efficient and effective customer service, online.
  • Buy with Confidence, Get Quality
  • Peace of Mind with Every Purchase
Browse
  • Garden Tools
    • Garden Carts
    • Pruners & Loppers
    • Shovels & Hoes
    • Tool Belts Totes & Organizers
    • Trowels & Planting Tools
    • Trugs & Harvest Baskets
    • Weeders & Cultivators
  • Pest & Disease Controls
    • Animal Controls
    • Fences & Barriers
    • Insect Controls
    • Plant Disease Controls
  • Plant Supports
    • Flower Supports & Trellises
    • Plant Support Accessories
    • Tomato Cages & Supports
    • Vegetable Supports & Trellises
  • Season Extenders
    • Cold Frames
    • Greenhouse Accessories
    • Greenhouse Kits
    • Plant Protectors & Row Covers
  • Soils & Fertilizers
    • Fertilizers
    • Potting Soil Mixes
    • Seed Starting Soils
    • Soil Amendments
  • Watering & Irrigation
    • Hose Reels & Organizers
    • Hoses
    • Irrigation Systems
    • Nozzles & Sprayers
    • Rain Barrels
    • Sprinklers & Timers
    • Watering Accessories
    • Watering Cans
    • WaterWell Kits & Components
  • Description
  • Additional information
  • Reviews (0)

Extend Your Greenhouse

  • Ships directly from supplier

The Monticello 4 foot extension kit is specifically designed for the Monticello line of greenhouses. The idea is simple: as your gardening greenhouse needs to grow, so can you greenhouse. Each 4ft extension kit comes 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. The Monticello is proudly made in the USA from start to finish.

Product Details

  • Aluminum, polycarbonate
  • Frost-proof
  • Assembly required
  • 49″ L x 101″ W x 90″ H
  • Made in USA
Color

BLACK, SILVER

Reviews

There are no reviews yet.

Be the first to review “MONT Greenhouse Extension, 8′ X 4” Cancel reply

Related products

Sale!
MONT Mojave Greenhouse, 8' X 12'
Quick View

Greenhouse Kits

MONT Mojave Greenhouse, 8′ X 12′

$327.00 Original price was: $327.00.$98.99Current price is: $98.99.
Sale!
VegTrug® Patio Greenhouse
Quick View

Greenhouse Kits

VegTrug® Patio Greenhouse

$229.99 Original price was: $229.99.$96.99Current price is: $96.99.
Sale!
MONT Greenhouse Powered Ventilation System
Quick View

Greenhouse Accessories

MONT Greenhouse Powered Ventilation System

$400.00 Original price was: $400.00.$95.99Current price is: $95.99.
Sale!
Ventilated Row Cover, 6.5' X 32.5'
Quick View

Plant Protectors & Row Covers

Ventilated Row Cover, 6.5′ X 32.5′

$19.99 Original price was: $19.99.$13.99Current price is: $13.99.
Sale!
MONT Greenhouse Work Bench System, 8' X 24'
Quick View

Greenhouse Accessories

MONT Greenhouse Work Bench System, 8′ X 24′

$374.00 Original price was: $374.00.$96.99Current price is: $96.99.
Sale!
Sunbubble Greenhouse
Quick View

Greenhouse Kits

Sunbubble Greenhouse

$349.99 Original price was: $349.99.$95.99Current price is: $95.99.
Sale!
Canopia® By Palram Balance Greenhouse, 8' X 12'
Quick View

Greenhouse Kits

Canopia® By Palram Balance Greenhouse, 8′ X 12′

$389.00 Original price was: $389.00.$98.99Current price is: $98.99.
Sale!
Canopia® By Palram Oasis Hexagon Greenhouse
Quick View

Greenhouse Kits

Canopia® By Palram Oasis Hexagon Greenhouse

$344.00 Original price was: $344.00.$97.99Current price is: $97.99.
MY ACCOUNT
  • Cart
  • Checkout
  • My account
  • Wishlist
ABOUT US
  • About Us
  • FAQ
  • Returns & Exchanges
  • Delivery
  • Contact Us
LEGAL
  • Privacy Policy
  • Payment Method
  • Shipping & Returns
  • Term and Conditions
Signup for Newsletter

Sign up for exclusive offers, original stories, events and more.

    Copyright 2025 © www.greenthumbus.com
    • Plant Supports
      • Flower Supports & Trellises
      • Vegetable Supports & Trellises
      • Tomato Cages & Supports
      • Plant Support Accessories
    • Garden Tools
      • Pruners & Loppers
      • Weeders & Cultivators
      • Trowels & Planting Tools
      • Trugs & Harvest Baskets
      • Shovels & Hoes
      • Garden Carts
      • Tool Belts Totes & Organizers
    • Pest & Disease Controls
      • Animal Controls
      • Fences & Barriers
      • Insect Controls
      • Plant Disease Controls
    • Soils & Fertilizers
      • Potting Soil Mixes
      • Fertilizers
      • Soil Amendments
      • Seed Starting Soils
    • Watering & Irrigation
      • Hose Reels & Organizers
      • Sprinklers & Timers
      • Rain Barrels
      • Hoses
      • Irrigation Systems
      • Nozzles & Sprayers
      • Watering Accessories
      • Watering Cans
      • WaterWell Kits & Components
    • Season Extenders
      • Plant Protectors & Row Covers
      • Greenhouse Kits
      • Greenhouse Accessories
      • Cold Frames
    • Best Seller
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.