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20'x15' Cathedral Victorian Glass Greenhouse

Regular price
Price: $35,999.00
Regular price
List Price:
Sale price
Price: $35,999.00
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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-authorized your credit card for the purchase.  As soon as we receive your order, we automatically reach out to our suppliers to confirm that it is in stock and available for shipment.  If your item is on backorder or unavailable, we will void the pre-authorization and reach out to you via e-mail.  If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and submit the order for shipment. If there are shipping delays we will let you know and confirm whether you’d like to proceed with the order. 

Note: In-stock greenhouse models are averaging 5-10 business days to ship. 

Order Shipment:

If your order is in stock and we process the charges to your credit card, it will ship within five business days from the date of your order.  We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out.  Once shipped, most orders arrive within 5-7 business days. If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at

Free Shipping:

We offer free shipping on all products with USPS, UPS, FedEx, DHL within the continental US. Other carriers may be used if your order requires freight shipping.

Why Buy From Garden Luster

Introducing the Janssens Cathedral Victorian Greenhouse—an enchanting oasis for your garden or backyard! Unleash the potential of your space with its expansive 20 by 15-foot floor size, lofty sides, and an extended roof cupola section, creating a haven for your plants or transforming into a glamorous hot tub cover or outdoor sunroom.

Elegance meets durability with its captivating design, featuring pre-welded aluminum framing and 4mm tempered glass construction. Revel in both safety and exceptional insulation, elevating the allure of your outdoor space. 

Unlock the potential of your space with this premium, multi-functional structure that not only meets your needs but adds undeniable value and charm to your home.


  • 300 sq. ft. floor space
  • 1 Double set of lockable hinged doors
  • 1 Sliding door
  • 2 Top hanging side windows
  • 2 Louver side windows
  • 4 Roof windows with manual spindle openers
  • 4mm tempered glass
  • 16 gauge powder-coated aluminum framing
  • Gutters with downspouts
  • Extended roof cupola
  • Decorative roof finials
  • 15-year limited warranty


  • Main Dimensions: 19'10"W x 15'L x 12'2"H
  • Second level roof nook dimensions: 5'4"W x 10'2"L
  • First gutter height: 6'8"
  • First ridge height: 9'1"
  • Second gutter height: 10'9"
  • Second ridge height: 12'2"


Due to the size of this greenhouse it is recommended to check your local building code for any required permits.

Limited Stock: Bronze model is in stock ready to ship within 5-10 business days of purchase. Black and Green models have longer lead time (2-4 months), please contact us for availability.

Made in Belgium by Janssens.