This high quality classic Janssens Royal Victorian VI 23 Small Greenhouse Kit provides the optimum environment for gardening year round while adding a delightful stately presence to any backyard setting.
The substantial aluminum framework and full 6ft 7in side wall height give you a comfortable interior workspace. The peak height is 8ft 6in. It has ample room to use as a small greenhouse for your veggies and other plants, or as a sunroom to enjoy the outdoors while you are shielded from the elements.
The Royal Victorian line is available in four sizes. The VI 23 is the small one in the series, at 7ft 9in W x 10ft 2in L x 8ft 6in H. Larger models are the VI 34, VI 36, and VI 46. You have a choice of standard Black or Fir Green aluminum frame. Other colors are available by special order to match your decor. The Janssens Royal Victorian VI 23 Small Greenhouse Kit comes with:
- 1 sliding door
- 1 roof window with spindle opener
- 1 roof window with automatic opener (no electricity needed)
- 1 louver window with clear Lexan cover sheet for the winter season and automatic opener (no electricity needed)
- 1 misting system
- Large gutters with downspouts
- Large bottom frame/base
If you choose 4 mm tempered glass you will enjoy a full view of your surroundings and full sunlight entering the greenhouse. This choice offers a traditional beautiful look and crystal clear views with maximum interior light. With glass side walls, you can choose either a glass roof or a hybrid configuration with the 10mm Heat Block polycarbonate roof. The hybrid combination gives the best of both worlds - clear views, and good heat protection and insulation on the roof where most light and heat transfer is.

With the 10mm Clearer twin-wall polycarbonate (on the right in the picture) on side walls and roof you will have a lot of light (81% transmission), UV protection (external side of the polycarbonate extrusions), good insulation, and a clear if somewhat distorted view of the outside. Note that the supply of the full (side walls and roof) clearer polycarbonate VI 23 is limited, and only available while supplies last. No hybrid version is available with this glazing choice.
With the newer 10mm Heat Block twin-wall polycarbonate roof (on the left in the picture), you will have more diffuse sunlight (58% transmission), a higher level of UV protection (both sides of the polycarbonate extrusions), good insulation, and the panels are more opaque and milky in appearance, offering no clear visibility outside. This choice offers the most heat protection. A full (side walls and roof) Heat Block model is available by custom order. The hybrid model, also a custom order, has glass walls with a Heat Block roof.
Whether you are overwintering special or valuable plants from the cold, starting seedlings, or creating a tropical jungle, you can enjoy years of maintenance-free use. The automatic roof opener, louvered window, and misting system are included to allow you to control the environment within your greenhouse. Optional shade cloth curtains or roller shades are also available if you need more shade in your greenhouse.
The VI 23 is perfect for use as a full featured greenhouse, a cozy jacuzzi house, a sunroom, or an elegant outdoor entertainment space to extend your parties beyond your living room.
If you prefer to have a professional crew install your greenhouse, call 888-648-5333 for a free consultation and recommendations.
FEATURES
- Spacious hobby greenhouse: 79 sq ft
- Strong aluminum frame construction with thick gauge
- Extra roof support cross bar
- Glazing choices:
- 4mm tempered glass glazing for best light transmission, safety, and some insulation value. Glass is secured in place with heavy rubber sealing.
- 10mm Clearer Polycarbonate glazing for better insulation value and a lot of light.
- 10mm Heat Block Polycarbonate glazing for best heat protection and diffused light.
- 6ft 7in full height side wall provide excellent headroom along the interior sides, with an 8ft 6in overall height at peak
- Decorative roof ridge crest and finials adds a touch of English sophistication and to deter birds perching on the roof
- 1 sliding door, can be put in any vertical glass panel location (front, back or side)
- 2 roof window, can be positioned as desired on the roof
- one manual spindle opener with included long-handled opener
- one automatic heat-powered opener
- 1 louvre window - can be placed as desired
- Lexan winter cover for the Louvre Window
- Automatic heat-operated opener (no electricity needed)
- Large gutters with downspouts
- Misting system
- Framework base can anchor to bare level ground (anchor stakes provided), a wood platform, or a concrete slab
- Made in Belgium by Janssens
- 15 Year Limited Warranty
- Financing Available
- Many compatible accessories available such as heaters, exhaust fans, shade curtains, additional automatic openers, hinged or sliding doors, tilt-out and louvre windows, benches, 5-slat and 2-slat shelving, seed trays, hooks, high 4" shelf, wheelbarrow ramp, and more
SPECIFICATIONS
- Assembled Size: 7ft 9in W x 10ft 2in L x 8ft 6in H
- Peak Height: 8ft 6in
- Side Wall Height: 6ft 7in
- Footage: 79 sq ft
- Frame: Jet Black or Fir Green Aluminum
- Glazing: 4mm Tempered Glass or 10mm Clearer twin-wall polycarbonate or 10mm Heat Block twin-wall polycarbonate
- Ships on 1 pallet and 2 long boxes, total weight of 994 lbs.
INSTALLATION VIDEO
INSTALLATION MANUALS
Janssens Royal Victorian Greenhouse Installation Manual
Janssens Victorian Hang Window Installation Manual
Janssens Victorian Fly Net Installation Manual
Why This Greenhouse Is Worth Buying From Us
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About Janssens Greenhouses
Janssens Greenhouse Assembly Overview
What Makes Janssens a Quality Greenhouse Brand
Janssens greenhouses are renowned for their European craftsmanship, superior materials, and long-lasting design. Every detail is built to exceed the standards of most competitors in the same price range, ensuring exceptional performance and visual appeal.
Premium Construction and Materials
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Heavy-duty aluminum frame: Janssens uses thicker, stronger aluminum profiles than most greenhouse brands, giving each structure superior rigidity and weather resistance.
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Corrosion-proof hardware: All fittings are made from stainless steel, preventing rust or deterioration in humid or outdoor environments.
High-Performance Glazing
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4 mm tempered safety glass: While many greenhouses use 3 mm glass, Janssens provides thicker, TÜV and GS-certified tempered glass for better insulation and durability against wind, hail, and impact.
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Full-length glass panels: Each glazing sheet is a single, unbroken panel that creates a sleek, modern appearance—unlike the overlapping or segmented panels found on many other brands.
Hybrid glazing option: 10mm Twin Wall Heat Block Polycarbonate roof panels. More information and photos here.
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Weather-tight sealing system: Heavy-duty rubber gaskets hold the glass securely in place, improving insulation and reducing heat loss during colder months.
Smart Design Advantages
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Integrated foundation frame (4” high): Included with every Janssens greenhouse, providing a stable, level base that other brands often charge extra for.
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European engineering standards: Janssens greenhouses are precision-built and independently tested for strength, safety, and long-term reliability.
Optional Accessories
Doors
- Additional Sliding Doors
- Additional Hinged Doors
- Lowered Threshholds for Doors
- Drop Kits for Doors (to place on a knee wall)
Windows
- Additional Roof Vents
- 'Push-Open' Side Windows
- Additional Louvre Windows
- Fly Screens for Roof vents
- Fly Screens for Push Open Side Windows
- Fly Screens for Louvre Windows
- Manual Openers for Roof or Side Windows
- Automatic Openers for Roof or Side Windows
- Automatic Openers for Louvre Windows
- Covers for Louvre Windows
- Restraint Cable System for Roof Vents
Shelving
- Top Shelf
- Bottom Shelf (Seed Tray)
- Slatted Shelving
Climate Moderation
- Wooden Roof Shades
- Shade Curtain
- Roll-Up Shades
- Exhaust Fan
- Solar Powered Exhaust Fan
- Intake Vent
- Palma Heater
- Big Red heater
- Digital Thermostat
Miscellaneous
- Wheelbarrow Ramp
- Metal Plant Hooks
- Solar Powered Light
- Grow Light
- Scroll Supports
- T Bolts
Warranty
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