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Exaco Janssens Cathedral Victorian Greenhouse with Large Cupola 15 x 20 ft
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Exaco Janssens Cathedral Victorian Greenhouse with Large Cupola 15 x 20 ft
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Exaco Janssens Cathedral Victorian Greenhouse with Large Cupola 15 x 20 ftTransform Your Garden with a Majestic Janssens Cathedral Victorian Greenhouse! The Exaco Cathedral Greenhouse stands out as one of the largest greenhouses, featuring a unique cupola that boosts both height and curb appeal. ike all Janssens greenhouses, it boasts 4mm tempered glass and an aluminum frame, making it tough enough to handle wind gusts and most hail. The Cathedrals structure is further strengthened by thick aluminum portal frames spanning
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Why choose thelockerguy wholesale?
Transform Your Garden with a Majestic Janssens Cathedral Victorian Greenhouse!
The Exaco Cathedral Greenhouse stands out as one of the largest greenhouses, featuring a unique cupola that boosts both height and curb appeal. ike all Janssens greenhouses, it boasts 4mm tempered glass and an aluminum frame, making it tough enough to handle wind gusts and most hail.
The Cathedral’s structure is further strengthened by thick aluminum portal frames spanning its entire width, which increases its stability in sustained winds and snow. Additionally, its doors and windows can be placed almost anywhere, providing excellent design flexibility.
Customize Your Outdoor With A Victorian Greenhouse
- Grand Growing Space – Measuring 19'11" x 15' with a soaring 12'2" peak height and 6'8" sidewalls, this Victorian greenhouse delivers 298 sq. ft. of room for plants, projects, and year-round gardening.
- Timeless Style, Modern Strength – A 25° roof pitch paired with a choice of Black or Bronze finish creates a striking focal point, while 17-gauge tubular aluminum extrusions and heavy-duty portal frame supports ensure exceptional durability.
- Clear & Strong Glazing – 4mm tempered glass panes offer stunning clarity, excellent insulation, and secure protection for your plants in all seasons.
- Multiple Entry Options – Features an impressive double hinged door for a welcoming main entry and a sliding door for quick and easy access.
- Advanced Ventilation – Includes 4 roof vents with spindle openers, 2 push-out side windows, and 2 louvre windows with automatic openers to keep your greenhouse perfectly balanced.
- Built for Year-Round Use – From robust framing to precision glazing, every detail is engineered for beauty, longevity, and optimal plant health.
A Place to Grow Plant Babies, Relax In Style, and Enjoy Nature
If you're serious about gardening, you'll love the thoughtful features designed to make your life easier. The standout ventilation system helps you easily control the temperature and airflow inside. This means your plants get the fresh air they need to stay healthy and thrive. No more worrying about overheating or poor air circulation—this greenhouse has got you covered.
But this greenhouse isn’t just for plants. It’s also great as a cover for a hot tub or an outdoor sunroom. Picture yourself relaxing in a hot tub surrounded by your garden or enjoying tea in a cozy sunroom. The beautiful Cathedral Victorian design adds charm and value to your property. It’s more than a greenhouse—it’s a place to unwind and enjoy the outdoors in style.
Specs of the Large Cathedral Victorian Greenhouse
| 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 |
| Door | 1 Set of Double Hinged Doors, 1 Sliding Door |
| Windows | 4 Roof Vents, 2 Push Out Side Windows, 2 Louvre Window |
| Window Openers | 4 Spindle (Roof), 2 Automatic (Louvre) |
Product Installation Instructions for Exaco Cathedral
Keep Your Greenhouse Dry and Protect Your Plants with Built-In Gutters and Downspouts
The greenhouse includes gutters and a downspout to efficiently manage rainwater, protecting your plants and keeping the surrounding area dry and tidy. These features collect rainwater from the roof, directing it away to prevent water damage and erosion, ensuring stability even during heavy rain. Note that while some Janssens models include gutters and downspouts as standard, they are not available for separate purchase or retrofitting onto other models.
Maximize Space in Your Cathedral Greenhouse with Multi-Functional Shelving
Upgrade your Cathedral Greenhouse with these shelving add-ons. They help maximize space, providing ample room to organize plants, gardening tools, and other items, ensuring your greenhouse is efficient and easy to use.
Top Shelf
Increase your greenhouse workspace with a full-length top shelf, available in dark green or black, measuring 19'10" L x 4" W.
Bottom Shelf (Seed Tray)
The seed tray simplifies working with plant materials and keeps your greenhouse tidy. Available in dark green or black, it measures 19'10" L x 20" W x 4" D, with a bottom made of corrugated plastic interlocking inserts.
Slat Shelving - 2 & 5 Slats
Affordable shelving for all Victorian Greenhouses, available in 2-slat (9" W x 59" L) or 5-slat (21" W x 59" L) configurations, in black or dark green. Shelves can connect end-to-end for extended length.
Keep Your Plants Happy and Healthy with Superior Ventilation Upgrades
Push Open Side Windows
Push-open window for greenhouse side walls, hinged at the top. Comes in dark green or black, includes extra glass panel, measuring 40 ½” x 30 ½”.
Side Window Fly Screen
The factory-assembled push-out side window fly screen is easy to install, fitting inside the push-out window with a brush seal opening for the window device.
Additional Louvre Window
Window with 11 glass panels and an extra piece for below, suitable for Royal or Junior Victorian Greenhouses. Manual operation, black color, with an available auto-opener.
Louvre Window Fly Screen
The pre-assembled fly screen for louvered windows is available in green or black and attaches easily outside with a simple clip, requiring no tools for installation.
Louvre Window Cover
A clear Lexan panel covers the louvered window during winter, with a 4mm thickness, measuring 40" x 28". Watch video installation here.
Louvre Windows Opener
Automatically opens and closes the louvre window based on greenhouse temperature changes using a paraffin oil-filled tube and a heavy spring mechanism.
Additional Roof Vent
All Janssens greenhouse models include at least 1 roof vent, with the option to add more. They are available in dark green and black, measuring 30 ½” x 32 ½”.
Roof Vent Fly Screen
Factory assembled for easy installation, mounts under the roof vent window with brush seals for auto or spindle opener access, available in green or black.
Manual Roof Window Opener
Designed like a large threaded screw, compatible with Royal or Junior Victorian greenhouses. Please note: a long handle is required for operation (not included).
Automatic Roof Window Opener
For Royal or Junior Victorian Greenhouses, opens windows up to 14 inches at 72ºF using paraffin oil, closing with a spring as temperatures drop—no electricity needed!
Improve Convenience with Custom Door Choices
Sliding Door - Single or Double Configuration
Available as a single door or double door in black or green finish to match your greenhouse. Low threshold option is available for both sizes.
Note: Original doors still come with the greenhouse—you must request their removal.
Hinged Door - Double Configuration
Double configuration hinged door with low threshold entry, available in black or green to match your greenhouse, and comes with lockable doors.
Drop Door Kit - Hinged Doors & Sliding Doors
Allows placement of a Royal Victorian greenhouse on a 20" to 36" high perimeter wall (24" recommended), without new glass panels (source locally). Additional polycarbonate available for cutting. Use "Lowered Threshold" with dropped doors; provide exact wall height for accurate cutting.
Lower Threshold Kit
The 2025 Lower Threshold Kit for Janssens Royal Victorian greenhouses lowers the entry height to just 1¼", making access more convenient. Its bottom-only design can be trimmed to fit single doors or buy another kit for double sliding doors.
Hinged Door Stopper
Durable black door stop with built-in latch holds doors securely open. Standard with original hinged doors unless alternate hardware is chosen.
Hinged Door Auto Closer
Commercial-style auto closer with adjustable arm gently pulls doors shut. Fits greenhouses on knee walls; allows up to 120° opening for safety and convenience.
Magnetic Hinged Door Holder
Perfect for greenhouses on stem walls, this sturdy magnetic holder keeps hinged doors open at 90°. Easy to use, reliable, and highly effective in windy conditions.
Master Climate Management with Add-Ons for Exaco Greenhouses
Exhaust Fan
The exhaust fan keeps fresh air moving in your greenhouse for a healthier growing environment. For easy setup, pair with the Lexan panel. Add a thermostat to automate it—otherwise, it runs continuously.
Exaco Solar Exhaust Fan System
Provides ventilation featuring a 50-watt solar panel, 16" CE approved fan, thermostat, and a 20-foot-cord. Batteries not included. Must order with lexan panel for easy installation.
Intake Shutter Vent
Designed to use with an exhaust fan, allows controlled airflow through the greenhouse. It helps maintain the ideal environment for the plants by regulating ventilation.
Peco Thermostat
PECO TF115P-002 weatherproof thermostat for greenhouses & ventilation. Intuitive dial, plug-and-play, 110/120V, cooling & heating, built to last.
Industrial Heater
Keep big greenhouses warm with this industrial infrared heater. Delivers 18,500 BTU, with fan and thermostat controls for steady heat.
Create the Perfect Greenhouse Retreat with These Key Extras
Solar Powered Light
Eco-friendly solar LED light for greenhouses/sheds. 250 lumens, 4 hrs runtime, cool white 6000K. Easy install, weather-resistant, 2-yr warranty. Not a grow light.
Astrica Grow Light
Boost growth with the ASTRICA 45W Interlight LED. F3 spectrum, 112 μmol/s, 2.5 μmol/J. IP65 durable, link up to 12 units. Note: Please let us know if you are stringing units together - it needs different cables.
Scroll Supports
Add strength and charm to your 20+ ft greenhouse with this 3-piece dark green scroll support set. Includes two shoulder and one roof support. Note: curtains won’t slide past the scrolls.
Roof Bracing
Roof Bracing with adjustable turnbuckle, made of 2 flat bars (~41" x 0.75" x 2mm). Adds strength to greenhouses. Available in aluminum, green, or black finishes.
Wheelbarrow Ramp
The strong rubber ramp, 49cm wide, 31cm long, and 10cm high, allows easy access for a wheelbarrow into the greenhouse.
Adjustable Metal Hooks
Stainless steel T-bolts install easily in greenhouse channels. Adjustable, rust-resistant, ideal for hanging plants, lights, or tools. Available in J Hooks and Pipe Hooks.
T Bolts
Stainless steel hammerhead bolts and nuts for attaching accessories in aluminum frame channels. Specifications include 20 bolts and nuts per set, with 6mm bolt heads, available in 12mm or 15mm lengths.
Introducing the Cathedral Greenhouse
Exaco Janssens Cathedral Victorian Greenhouse with Large Cupola 15 x 20 ft
Item no
:
34281624878
US$ 19549.58
Pay in 4 interest-free payments of $4887.40 Learn more
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1piece
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Ships within 48 hours · Estimated delivery Jun 25 - Jun 30
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- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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