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(greenhouses)

15x20 Janssens Kathedral Orangery Greenhouse

Quick Code: P172980
Greenhouse Size Diagram

Greenhouse Dimensions

A: Greenhouse width

4580mm (15′)

B: Greenhouse depth

6060mm (19′ 11″)

C: Ridge height

3700mm (12′ 2″)

D: Eaves height

2010mm (6′ 7″)

E & F: Door Size

1400mm (4′ 7″) x 2000mm (6′ 7″) (aperture)

Minimum Base Size

4580mm (15′) x 6060mm (19′ 11″)

Toughened Glass Glazing

Toughened glass, also known as tempered glass, is a high-strength and durable glazing material that is ideal for greenhouses. It undergoes a special heat treatment process that enhances its resistance to impact, making it less likely to break or shatter. In the rare event of breakage, toughened glass crumbles into small, granular pieces, reducing the risk of injury. Gardeners and plant enthusiasts value toughened glass for its safety, longevity, and ability to provide a clear and well-lit environment for optimal plant growth.

sku:KAT46

£22,500

£15 EXTRA OFF!

Use code SPRING15 at checkout min order £499
(greenhouses)

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Delivery: Within 8-16 weeks*

Urban Models - Within 8 weeks

Master Models - Within 10-12 weeks

All other Models - Within 16 weeks

  • 4580mm x 6060mm Dimensions (15ft x 19ft 9")
  • 2m High Eaves
  • Aluminium Frame with Tubular and Box Section for Superior Strength.
  • Green or Black Powder Coated Frame.
  • Box Section Base Plinth.
  • Double Hinged Locking Doors - Outward Opening
  • 4mm Full Length Toughened Safety Glass
  • 2 x Hinged Side Vent
  • 2 x Automatic Roof Vents
  • Rubber Glazing Gasket Strips (no fiddly clips)
  • Gutters and 40mm Aluminium Downpipes.
  • Stainless Steel Fittings.
  • Step by Step Instruction Manuals with Instructional DVD.
  • 13 Year Manufacturers Warranty.
  • Fully Customisable Door and Windows are available as Options below.
  • Many Accessories Available - Scroll down this page.

The 15x20 Janssens Kathedral Orangery Greenhouse blurs the line between what a greenhouse should be. It's striking modern looking design means that the Kathedral would be just at home hosting a function or dining guests as it would cultivating tropical plants. The Orangery can also be made in any 2ft lengths up to 40ft to truely personilise your greenhouse.

Pick from a green or black powder-coated finish to suit your garden or personal style preferences. Both Hinged and Sliding Double and Single Doors are available as options below to fully customise your greenhouse.

All Janssens Kathedral Greenhouses are built around a strong box-section aluminium frame and base, with 4mm Toughened Glass held in with proper rubber glazing gasket to take on the worse of UK weather!

Can't find the size or specification to suit your needs?

Most Janssens Greenhouses are fully customisable.

Call us on 0800 098 8877 for your Free Quote!

Options: Click options to add them to your order then click "Buy Now"

2: Door Options

Hinged Double Door
Hinged Double Door

Add a set of hinged double doors to your greenhouse

+ £1,100
Qty 1
Single Hinged Door
Single Hinged Door

Add a Single Hinged Door to your greenhouse

+ £495
Qty 1
Double Sliding Door
Double Sliding Door

Add a set of Double Sliding Doors to your Greenhouse

+ £445
Qty 1
Single Sliding Door
Single Sliding Door

Add a Single Sliding Door to your greenhouse

+ £190
Qty 1

3: Staging

Janssens Colour Matched Full Length Integrated Shelving
Janssens Colour Matched Full Length Integrated Shelving

Add the Colour Matched Full Length 310cm long integrated shelving to the side of your greenhouse to help retain your floor space

+ £115
Qty 1
Janssens Colour Matched Seed Tray Shelving
Janssens Colour Matched Seed Tray Shelving

Add the Colour Matched Full Width 310cm long Seed Tray Shelving to the rear of your greenhouse to help retain your floor space

+ £295
Qty 1
1 Tier Staging Colour Matched
SAVE £15 17%OFF
1 Tier Staging Colour Matched

This 1 Tier Vitavia Colour Matched greenhouse staging gives you a handy work surface and storage area. Dimensions: 76cm (H) x 50cm (D) x 120cm (W)

+ £74
Qty 1
Janssens Integrated Colour Matched Shelving
Janssens Integrated Colour Matched Shelving

Add the Colour Matched 150cm long x 23cm wide integrated shelving to your greenhouse to help retain your floor space

+ £55
Qty 1
2 Tier Staging Colour Matched
SAVE £23 19%OFF
2 Tier Staging Colour Matched

This 2 Tier Vitavia Colour Matched greenhouse staging gives you a handy work surface with additional low level storage. Dimensions: 76cm (H) x 50cm (D) x 120cm (W)

+ £96
Qty 1
Top Tier Staging Extension Colour Matched
SAVE £10 17%OFF
Top Tier Staging Extension Colour Matched

This little top level Colour Matched shelf attaches to 1 or 2 Tier staging to give you a bit more storage space

+ £49
Qty 1
Janssens Silver Integrated Staging
Janssens Silver Integrated Staging

Add the Silver 150cm long x 53cm wide integrated staging to your greenhouse to help retain your floor space

+ £80
Qty 1

4: Ventilation and Shading

Curtain Shading
Curtain Shading

Curtain shading will protect your plants from sun scorch and provide shade to moderate temperature. 6ft x 8ft.

+ £27
Qty 1
Louvre Vent
Louvre Vent

A louvre window brings fresh cool air into your greenhouse to moderate the temperature inside. An essential add on.

+ £79
Qty 1
Auto Louvre Opener
Auto Louvre Opener

This automatic opener mechanism will open your louvre window for you when you’re not around. No need to worry about ventilation, this does it automatically for you! (Does not include louvre window).

+ £40
Qty 1
Janssens Sunscreen Shading
Janssens Sunscreen Shading

Add the Janssens retractable shading kit for ease of use

+ £129
Janssens Roof Vent
Janssens Roof Vent

Add roof ventilation to your greenhouse to help moderate the temperature

+ £95
Qty 1
Janssens Side Vent
Janssens Side Vent

Help recirculate the air in your greenhouse with a side vent or two!

+ £320
Qty 1
Automatic Louvre vent Opener
Automatic Louvre vent Opener

Add an automatic arm to your louvre vent. DOES NOT INCLUDE LOUVRE VENT.

+ £40
Qty 1

5: Extras

Hygrometer
Hygrometer

This Hygrometer will measure the humidity levels inside your greenhouse.

Soil Thermometer
Soil Thermometer

This Soil Thermometer will let you track the temperature of your soil inside the greenhouse.

Max/Min Thermometer
Max/Min Thermometer

This thermometer will tell you your maximum daytime temperature as well as record the lowest night time temperature in your greenhouse.

100L Mini Rainsaver Water Butt
100L Mini Rainsaver Water Butt

Add this 100L water butt kit that includes: Butt, Tap & Lid - Black Stand

+ £54
Qty 1

6: Choose your colour

Black Powder Coated Frame
Black Powder Coated Frame

+ £0
Green Powder Coated Frame
Green Powder Coated Frame

7: Add a 73cm/2ft Extension

2ft Extension section
2ft Extension section

Extend the length of your Kathedral Greenhouse in 2ft/73cm increments.

Qty 1
+ £1,450

15x20 Janssens Kathedral Orangery Greenhouse

£22,500