The Janssens Cathedral Victorian Greenhouse is a versatile, spacious, feature packed addition to any garden or backyard. The 20 by 15 foot floor size, tall sides and extended roof cupola section allow space for all of your plant growing needs, or use it as a hot tub cover or outdoor sunroom.
The attractive looks of the Cathdral Greenhouse are matched by superior strength of pre-welded aluminum framing and 4mm tempered glass construction. This choice of glass provides a high degree of safety and impressive insulative value.
The Cathedral Greenhouse includes four roof vents with automatic openers and a louver window to help keep the interior at a comfortable temperature. Two hanging windows on the sides can also swing up for added ventilation. A set of lockable swinging doors and a single lockable sliding door make entry simple.
Additional features include four roof vents with automatic openers, and a louvre window which can be used together for enhanced temperature control. For added ventilation there are two large hanging side windows which open by swinging upward. Access is easy through a wide set of lockable swinging doors and a single lockable sliding door.
This is a premium, large size structure that can be used for multiple purposes and will add value to your home.
NOTE: The Cathedral Greenhouse is available by special order only. Please call (512) 407-8500 Ext 701 for ordering information. It is also recommended that you view the foundation construction instructions and easy assembly instructions prior to placing your order.
The Janssens Cathedral Victorian Greenhouse is a versatile, spacious, feature packed addition to any garden or backyard. The 20 by 15 foot floor size, tall sides and extended roof cupola section allow space for all of your plant growing needs, or use it as a hot tub cover or outdoor sunroom.
The attractive looks of the Cathedral Greenhouse are matched by superior strength of pre-welded aluminum framing and 4mm tempered glass construction. This choice of glass provides a high degree of safety and impressive insulative value.
The Cathedral Greenhouse includes four roof vents with automatic openers and a louver window to help keep the interior at a comfortable temperature. Two hanging windows on the sides can also swing up for added ventilation. A set of lockable swinging doors and a single lockable sliding door make entry simple.
Additional features include four roof vents with automatic openers, and a louvre window which can be used together for enhanced temperature control. For added ventilation there are two large hanging side windows which open by swinging upward. Access is easy through a wide set of lockable swinging doors and a single lockable sliding door.
This is a premium, large size structure that can be used for multiple purposes and will add value to your home.
NOTE: The Cathedral Greenhouse is available by special order only. Please call (512) 407-8500 Ext 701 for ordering information. It is also recommended that you view the foundation construction instructions and easy assembly instructions prior to placing your order.
Click to display more information and larger image
Shipping Specifications on Wholesale Price List (Open Links and Documents Below for Access)
Due to the size of this greenhouse it is recommended to check your local building code for any required permits and view the foundation construction guide prior to ordering.
NOTE: The Cathedral Greenhouse is available by special order only. Please call (512) 407-8500 Ext 701 for more information.
view all questions and answers for this product
I’m wondering if you could advise on a size (BTU) heater I would need for my size greenhouse in my climate?
Tristan Throgmorton | 8/4/2020
Sorry – the answer is not that simple. For one thing I do not know your climate. You will have to tell me. And next: how warm do you want to keep it in side: over wintering outdoor plants requires less heat than, orchids or growing form seeds during the winter.
Secondly, it greatly depends on what you are doing with your greenhouse – for example the more plants the fuller it is the more natural heat is retained and generated. There is a big different between half full and full: can make 10-15º difference. Large raised beds are a great heat generator.
Another option is: to use 1 or 2 large open troughs – 70 gal. + (full with water) (from say Tractor Supply) – these to can add 10-15º at night. And at the same time they offer additional humidity during the cold winter months.
One of our major customers offers the following calculator: http://igctest.commercev3.com/greenhouse_btu_calculator
Generally you will need to experiment.
