Skip to content
We Help Homeowners Make A Neighbor Jealous With ✓ FREE Shipping ✓ Lowest Prices ✓ Exceptional Reviews
We Help Homeowners Make A Neighbor Jealous With ✓ FREE Shipping ✓ Lowest Prices ✓ Exceptional Reviews
Lifetime Support

Call (725)-239-9966

2,000+ Happy Customers & Jealous Neighbors
300+ 5 Star Reviews
Free Shipping

On Orders Over $200!

Spacious 15x20 ft greenhouse with an elegant large cupola, featuring expansive glass panels and a durable frame, set against a clear blue sky.

Exaco Janssens Cathedral Victorian Greenhouse with Large Cupola 15 x 20 ft

by Exaco
SKU Cathedral-Br
Sale Sale
$42,999.00
$42,999.00 - $42,999.00
$42,999.00
$35,999.00
$35,999.00 - $35,999.00
$35,999.00
Color: Bronze
Safe and Secure Checkout Badge
Why Buy From Us?

☑ Fast Response & Service Times & FREE Shipping: You will always reach a real person.

☑ Real, Friendly, Expert Staff Trusted By Hundreds of Home Owners and Contractors!

☑ Price Match Guarantee Ensures You'll Receive The Best Deal Online Even After Your Purchase.

☑ Authorized Retailer For All Brands: Only new warrantied equipment for peace of mind.

Shipping & Handling For Exaco

Handling Time: Ships in 5 to 9 business days. Custom items may take longer.

Shipping Time: Please allow 2-9 business days for delivery to your curbside.

Out goal is to get your order to you as quickly as possible. This item ships to all States of the contiguous U.S.A (lower 48). Please note that all shipments over 100lbs go by LTL freight. For more information check out our Shipping Policy.

Cancellation/Return Policy For Exaco

Any order can be canceled within 24 hours of payment.

After 24 hours, most orders will be packed and placed for pickup by the shipping carriers. Once picked up, the item will be considered shipped.

Custom, Built-To-Order, on demand products cannot be canceled or refunded after 24 hours, as these products are put into production specifically for your order. 

Damaged Items:

All orders are protected by the manufacturer's warranty. We will repair, or replace any item damaged during shipment or faulty upon arrival as long as the documentation is provided.

Returns And Refunds:

Every brand has some specifics to their return policy. Please see details below:

Return Policy: Exaco generally does not accept returns as everything is built to order. Exceptions apply.

Support Agent

Questions? We Are Here To Help!


Call Us Now:  725-239-9966
Instant Live Chat:  Click to Chat
Mon-Fri 8am-7pm PST

Transform Your Garden with a Majestic Janssens Cathedral Victorian Greenhouse!

The Janssens 15 x 20 ft Greenhouse with Large Cupola is more than just a greenhouse; it's a versatile and visually stunning addition to your outdoor space. With its spacious design, durable construction, and premium features, it offers an ideal environment for plants while adding aesthetic value to your home.

Customize Your Outdoor Oasis with a Victorian Greenhouse:

Spacious 15x20 ft greenhouse with an elegant large cupola, featuring expansive glass panels and a durable frame, set against a clear blue sky.

  1. Spacious Design: 20 by 15-foot floor size with tall sides and extended roof cupola section.

  2. Durable Construction: Pre-welded aluminum framing and 4mm tempered glass for superior strength and safety.

  3. Temperature Control: Four roof vents with automatic openers, louver window, and two hanging side windows for optimal ventilation.

  4. Easy Access: Lockable swinging doors and a single lockable sliding door for convenient entry.

  5. Versatile Use: Ideal for plant growing, hot tub cover, or outdoor sunroom.

  6. Premium Aesthetics: Attractive Cathedral Victorian design that adds value and visual appeal to your property.

Transform your outdoor space with the Janssens Cathedral Greenhouse. Elevate your gardening experience today and embrace the luxury of nature at your fingertips.

Start cultivating beauty and functionality now!

What's included in the box?

  • One double set of hinged doors with closers
  • 1 sliding door
  • 2 top hanging side windows
  • 1 louver window
  • 4 roof windows with spindle openers
  • 4mm tempered glass

How many slats does the cathedral normally hold?

Without special custom work, the Cathedral really only allows shelving on the shorter sides due to the heavy duty portal framing.  Three slatted shelves may be run end to end along the shorter sides (of either or both widths).  One slatted shelf would fit between the heavy duty portal framing on the long sides.

Specs of the Large Cathedral Victorian Greenhouse

Technical sketch of a large cupola Victorian cathedral greenhouse measuring 15x20 ft, with marked dimensions for architectural planning.
Main Dimensions 15' W x 19'11" L x 12'2" H
Second Level Nook Dimensions 5'4" W x 10'2" L
Floor Space 298 Square Feet
First Gutter Height 6'8" H
First Ridge Height 9'1" H
Second Gutter Height 10'9" H
Second Ridge Height 12'2" H
Cupola Dimensions 10'2" L x 5'4" W
with pre-welded frame (horizontal part)
Aluminum Supports 2 Heavy-Duty Aluminum Reinforcement Supports
(from front to back) - 2.3" W x 5.2" D

    Janssens Victorian Greenhouse Manual

    Janssens Cathedral Victorian Greenhouse Manual

    Installation Guide

    Video of the 15x20 ft Victorian Greenhouse

    Compare products

    {"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

    Select first item to compare

    Select second item to compare

    Select third item to compare

    Compare

    Transform Your Garden with a Majestic Janssens Cathedral Victorian Greenhouse!

    The Janssens 15 x 20 ft Greenhouse with Large Cupola is more than just a greenhouse; it's a versatile and visually stunning addition to your outdoor space. With its spacious design, durable construction, and premium features, it offers an ideal environment for plants while adding aesthetic value to your home.

    Customize Your Outdoor Oasis with a Victorian Greenhouse:

    Spacious 15x20 ft greenhouse with an elegant large cupola, featuring expansive glass panels and a durable frame, set against a clear blue sky.

    1. Spacious Design: 20 by 15-foot floor size with tall sides and extended roof cupola section.

    2. Durable Construction: Pre-welded aluminum framing and 4mm tempered glass for superior strength and safety.

    3. Temperature Control: Four roof vents with automatic openers, louver window, and two hanging side windows for optimal ventilation.

    4. Easy Access: Lockable swinging doors and a single lockable sliding door for convenient entry.

    5. Versatile Use: Ideal for plant growing, hot tub cover, or outdoor sunroom.

    6. Premium Aesthetics: Attractive Cathedral Victorian design that adds value and visual appeal to your property.

    Transform your outdoor space with the Janssens Cathedral Greenhouse. Elevate your gardening experience today and embrace the luxury of nature at your fingertips.

    Start cultivating beauty and functionality now!

    What's included in the box?

    • One double set of hinged doors with closers
    • 1 sliding door
    • 2 top hanging side windows
    • 1 louver window
    • 4 roof windows with spindle openers
    • 4mm tempered glass

    How many slats does the cathedral normally hold?

    Without special custom work, the Cathedral really only allows shelving on the shorter sides due to the heavy duty portal framing.  Three slatted shelves may be run end to end along the shorter sides (of either or both widths).  One slatted shelf would fit between the heavy duty portal framing on the long sides.

    Specs of the Large Cathedral Victorian Greenhouse

    Technical sketch of a large cupola Victorian cathedral greenhouse measuring 15x20 ft, with marked dimensions for architectural planning.
    Main Dimensions 15' W x 19'11" L x 12'2" H
    Second Level Nook Dimensions 5'4" W x 10'2" L
    Floor Space 298 Square Feet
    First Gutter Height 6'8" H
    First Ridge Height 9'1" H
    Second Gutter Height 10'9" H
    Second Ridge Height 12'2" H
    Cupola Dimensions 10'2" L x 5'4" W
    with pre-welded frame (horizontal part)
    Aluminum Supports 2 Heavy-Duty Aluminum Reinforcement Supports
    (from front to back) - 2.3" W x 5.2" D

      Janssens Victorian Greenhouse Manual

      Janssens Cathedral Victorian Greenhouse Manual

      Installation Guide

      Video of the 15x20 ft Victorian Greenhouse