The MONT 4-Foot Extension Kit is designed exclusively for the MONT line of greenhouses, allowing you to expand your structure in 4-ft increments. Built in the USA with the same heavy-duty extruded aluminum frame and 8mm twin-wall polycarbonate as the original greenhouse, this kit integrates seamlessly and includes a roof vent with an automatic opener for added ventilation. It’s the perfect way to future-proof your greenhouse investment.
Quick assembly construction: designed for straightforward bolt-together install.
Integrated flush base design: extension aligns perfectly with your existing MONT foundation.
Commercial-grade build: heavy-duty extruded aluminum frame + 8mm UV-stable twin-wall polycarbonate panels.
Ventilation included: each extension adds a 2' × 2' roof vent with automatic opener.
Dual rainwater gutter system: integrated into frame for water collection/management.
Full 10-Year Warranty: strongest in the industry, backed by Riverstone.
Made in the USA: proudly designed and manufactured domestically.
All aluminum framework (black finish to match Mont-BK models)
All 8mm twin-wall polycarbonate panels
Hardware kit
Illustrated instruction manual
Screwdriver & wrench (tools included)
We get it. You've got a lot of choice when it comes to online retailers. Here's why we think you should shop with us at Vista Greenhouses.
But first, you should definitely hear from our customers here.
Note: Excludes select freight items; see Shipping tab on product pages
Shipping is FREE on all orders to customers within USA.
We don't want to mess around with fine print and extra charges, we like things to be simple and easy.
Want to know about our Returns Policy? Read more here.
Order Confirmation:
As soon as you place your order you will receive an order confirmation e-mail. This means that we have received your order in our system and pre-authorised your credit card for the purchase.
As soon as we receive your order we automatically check to confirm that your order is in stock and available for immediate shipment. If your item is on back-order or unavailable we will void the pre-authorisation and reach out to you via e-mail to see if alternate arrangements can be made.
If your item(s) are available for immediate shipment (within 5 business days) we will process the charges and get to work preparing your order for shipment.
Order Shipment:
If your order is in stock and we process the charges to your credit card it will ship within three business days from the date of your order.
We will send you shipping confirmation within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out.
If you do not receive shipping confirmation from us within four business days of your order feel free to follow up with us at sales@vistagreenhouses.com.
International Orders:
Please be aware that our products are made specifically for the USA market. This means that they require a [choose 110V or 240V] electrical system to function correctly.
Our products have generally not been certified for use with other countries electrical safety standards but all of our products are certified to USA standards.
We will happily ship our fantastic products to international customers. Due to the extremely wide variety of product dimensions we will provide an up to date shipping price quote for you on request.
If you are happy with our shipping quote we will prepare an order and payment though our ultra secure online payment gateway.
Damages:
Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery or do not agree to accept the delivery.
If you do accept delivery you are required to immediately take photos using your smart phone or camera of the damaged packaging or products inside the packaging.
If your item(s) do arrived damaged please send photos to sales@vistagreenhouses.com, then visit our Returns page and lodge your return claim online.
The MONT 4-Foot Extension Kit is designed exclusively for the MONT line of greenhouses, allowing you to expand your structure in 4-ft increments. Built in the USA with the same heavy-duty extruded aluminum frame and 8mm twin-wall polycarbonate as the original greenhouse, this kit integrates seamlessly and includes a roof vent with an automatic opener for added ventilation. It’s the perfect way to future-proof your greenhouse investment.
Quick assembly construction: designed for straightforward bolt-together install.
Integrated flush base design: extension aligns perfectly with your existing MONT foundation.
Commercial-grade build: heavy-duty extruded aluminum frame + 8mm UV-stable twin-wall polycarbonate panels.
Ventilation included: each extension adds a 2' × 2' roof vent with automatic opener.
Dual rainwater gutter system: integrated into frame for water collection/management.
Full 10-Year Warranty: strongest in the industry, backed by Riverstone.
Made in the USA: proudly designed and manufactured domestically.
All aluminum framework (black finish to match Mont-BK models)
All 8mm twin-wall polycarbonate panels
Hardware kit
Illustrated instruction manual
Screwdriver & wrench (tools included)
We get it. You've got a lot of choice when it comes to online retailers. Here's why we think you should shop with us at Vista Greenhouses.
But first, you should definitely hear from our customers here.
Note: Excludes select freight items; see Shipping tab on product pages
Shipping is FREE on all orders to customers within USA.
We don't want to mess around with fine print and extra charges, we like things to be simple and easy.
Want to know about our Returns Policy? Read more here.
Order Confirmation:
As soon as you place your order you will receive an order confirmation e-mail. This means that we have received your order in our system and pre-authorised your credit card for the purchase.
As soon as we receive your order we automatically check to confirm that your order is in stock and available for immediate shipment. If your item is on back-order or unavailable we will void the pre-authorisation and reach out to you via e-mail to see if alternate arrangements can be made.
If your item(s) are available for immediate shipment (within 5 business days) we will process the charges and get to work preparing your order for shipment.
Order Shipment:
If your order is in stock and we process the charges to your credit card it will ship within three business days from the date of your order.
We will send you shipping confirmation within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out.
If you do not receive shipping confirmation from us within four business days of your order feel free to follow up with us at sales@vistagreenhouses.com.
International Orders:
Please be aware that our products are made specifically for the USA market. This means that they require a [choose 110V or 240V] electrical system to function correctly.
Our products have generally not been certified for use with other countries electrical safety standards but all of our products are certified to USA standards.
We will happily ship our fantastic products to international customers. Due to the extremely wide variety of product dimensions we will provide an up to date shipping price quote for you on request.
If you are happy with our shipping quote we will prepare an order and payment though our ultra secure online payment gateway.
Damages:
Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery or do not agree to accept the delivery.
If you do accept delivery you are required to immediately take photos using your smart phone or camera of the damaged packaging or products inside the packaging.
If your item(s) do arrived damaged please send photos to sales@vistagreenhouses.com, then visit our Returns page and lodge your return claim online.
