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10x20 Janssens Master Greenhouse - £3695

10x20 Janssens Master Greenhouse
Free Delivery
Click images to enlarge - Pictures are for illustration purposes
Quick Code: P172866

Greenhouse Dimensions

Greenhouse Size Diagram
  • A: 3100mm (10ft 1")
  • B: 4580mm (15ft)
  • C: 2740mm (8ft 10")
  • D: 2010mm (6ft 6")
  • E: 700mm (2ft 2")
  • F: 2000mm (6ft 5")
  • Minimum size for your greenhouse base: 3100mm x 4580mm

Greenhouse Base with Corner Posts (Optional)

Place on hard or even SOFT GROUND!

Vitavia Silver Corner Post

The usual golden rule when erecting a greenhouse is to place it on a hard and level surface so as to keep the greenhouse from twisting or becoming unstable over time.

If you want to install your greenhouse on soft ground then our optional Vitavia steel bases come with corner posts that you can bolt to the base. These posts are roughly 18 inches long and can be sunk into soil and then concreted in place once your greenhouse is level and square.

If you are intending to put your greenhouse on slabs or concrete then you simply don't attach the posts to the base, simple!

Toughened Safety Glass

Toughened Safety Glass

Toughened Glass is much stronger than Horticultural glass and won't crack. If it does break it disintegrates into hundreds of small pieces that are unlikely to cause injury, unlike Horticultural Glass which breaks into shards. It's heavy weight also means it's the best glazing option for windy spots and the UK in general!

Full Length Glass (Long Pane)

Toughened Glass is long pane, meaning each panel in your greenhouse is one piece of glass. No unsightly overlaps where dirt and grime can collect and no Overlap Clips to worry about.

sku:MH36
  • £3695 inc VAT
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  • Delivery Details

  • FREE Delivery

    Within 6 - 8 weeks.

    Some Scottish postal areas attract an additional delivery charge.

    Updated: 26/9

    Read our COVID-19 Statement

Standard Features Include:

  • 3100mm x 6060mm Dimensions (10ft 1" x 19ft 8")
  • 2m High Eaves
  • Aluminium Frame with Tubular and Box Section for Superior Strength.
  • Box Section Base Plinth.
  • Double Sliding Door.
  • 4mm Full Length Toughened Safety Glass
  • Rubber Glazing Gasket Strips (no fiddly clips)
  • 4x Roof Vents
  • 11 Blade Louvre Vent
  • Gutters and 40mm Aluminium Downpipes.
  • Stainless Steel Fittings.
  • Step by Step Instruction Manuals with Instructional DVD.
  • 13 Year Manufacturers Warranty.
  • Many Accessories Available - Scroll down this page.

The 10ft x 20ft Janssens Helios Master Greenhouse is the largest in the range, and a superb example of a greenhouse ideal for domestic or commercial use. At 10ft Wide it’s really practical. Then add in the 20ft length and you have a greenhouse for the serious gardener or grower.4mm Toughened Glass is held in by rubber glazing gasket, making it very wind resistant and safe for the garden or business environment.

All Janssens Master 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!

Options: Click options to add them to your order then click "Add to Basket"

Select your size

Recommended Accessories Discount Pack (12% OFF)

Greenhouse Installation

  • Installation

    Greenhouse Installation

    Have your new greenhouse installed by a certified Vitavia greenhouse installer. Please Note: We will only install onto a flat level surface such as slabs, concrete or decking. You may be charged for additional accessories

    + £720.00

Staging

  • Janssens Seed Tray Shelving

    Janssens Seed Tray Shelving

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

    1

    +£250.00

  • Janssens Integrated Silver Shelving

    Janssens Integrated Silver Shelving

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

    1

    +£40.00

Ventilation and Shading

  • Louvre Vent

    Louvre Vent

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

    1

    +£79.00

  • Janssens Sunscreen Shading

    Janssens Sunscreen Shading

    Add the Janssens retractable shading kit for ease of use

    +£175.00

Extras

  • Hygrometer SAVE £4 21%OFF

    Hygrometer

    This Hygrometer will measure the humidity levels inside your greenhouse.

    +£15.00

  • Soil Thermometer

    Soil Thermometer

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

    +£29.00

  • 100L Mini Rainsaver Water Butt SAVE £7 15%OFF

    100L Mini Rainsaver Water Butt

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

    1

    +£39.00

  • Vitavia Garden Cloche

    Vitavia Garden Cloche

    Get your growing season of to an early start by using the Garden Cloche to pre warm soil for early planting. 790mm (L) x 390mm (W) x 250mm (H)

    1

    +£50.00

  • Vitavia Nursery Cloche

    Vitavia Nursery Cloche

    Cloche's are ideal to get a head start with your plants and Veg. 1190mm (L) x 390mm (W) x 250mm (H)

    +£60.00

Delivery Surcharges

  • Additional delivery charge to the following post codes: PA PH DD AB IV KW

    Additional delivery charge to the following post codes: PA PH DD AB IV KW

    PLEASE NOTE, VITAVIA DO NOT DELIVER TO NORTHERN IRELAND, THE ISLE OF WIGHT, ANY SCOTTISH ISLANDS OR ANY OTHER OFFSHORE AREA. CALL US FOR ALTERNATIVES.

    +£115.00


10x20 Janssens Master Greenhouse

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