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Swallow Raven 8x20 Dwarf Wall Wooden Greenhouse

  • 8ft 8" wide x 20ft 10" deep
  • 8ft 8" Ridge Height
  • Includes Installation
  • 3mm Toughened Glazing
  • Redwood Pine Thermowood
  • Heated Treated for Superior Resistance to Moisture and Warping
  • 20mm PVC Damp Proof Barrier on the Base
  • Stainless Steel Nails Throughout
  • Double Hinged Doors with Mortice Lock
  • 8 x Automatic Roof Vents
  • Full Length of Staging Included
  • Requires 607mm High Wall
  • 12-year Warranty

More Sizes:

+22 more sizes, click to see all

Dwarf Wall Model

Dwarf Wall Version
+ £0

Painted Finish

Natural
Oiled + £1,082
Lily White + £2,147
Bracken + £2,147
Olive + £2,147
Midnight + £2,147
Black + £2,147
Stone + £2,147
Summer Green + £2,147
Cloud Grey + £2,147
Slate + £2,147
Robin’s Egg Blue + £2,147

Add Premium options?

Premium Cresting
+ £650
Qty 1

Add Additional Staging and Shelving?

Extra Side of Staging Oiled Finish
+ £637
High Level Shelf Oiled Finish
+ £321
Qty 1

Add Rainwater Systems?

Black Rainwater System
+ £459

Add Dwarf Wall Option?

Dwarf Wall Version
+ £

Add More Useful Extras?

£12 off
Side Vent Oiled Finish
+ £111
Qty 1
£42 off
Swallow Wren Cold Frame Oiled Finish
+ £383
Qty 1
£50 off
Swallow Sparrow Frame Oiled Finish
+ £450
Qty 1
£32 off
Bench with Shelf Oiled Finish
+ £294
Qty 1
£37 off
External Shed Door (With Shed Extension Only)
+ £334
£61 off
Additional Double Greenhouse Door Oiled Finish
+ £557

Combination Shed

Combination Shed Extension 8ft x 4ft
+ £1,455
Combination Shed Extension 8ft x 6ft
+ £1,867
Combination Shed Extension 8ft x 8ft
+ £2,277
Combination Shed Extension 8ft x 10ft
+ £2,661

Combination Shed

Painted Combination Shed Extension 8ft x 4ft
+ £1,819
Painted Combination Shed Extension 8ft x 6ft
+ £2,333
Painted Combination Shed Extension 8ft x 8ft
+ £2,846
Painted Combination Shed Extension 8ft x 10ft
+ £3,358
Thermowood Greenhouse
Why is ThermoWood the Best?

ThermoWood is a thermally modified timber known for its durability and stability in harsh weather.

Oiled Panel
Oiled Finish

Oiling Wood enhances its natural beauty and prolongs its lifespan.

Greenhouse Roof Auto Vents
Autovents as Standard

Swallow use high quality Bayliss XL Automatic roof vent openers as standard on every roof vent. Even when you're not around your greenhouse will be well ventilated.

Swallow Staging Included
Staging Included

Swallow include a length of slatted staging with all greenhouses that is 520mm wide and 745mm high.

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Installation Included

Swallow Greenhouses are delivered and installed countrywide for free. You simply order your new greenhouse and it will be delivered and erected in your garden by a Swallow fitting team.

Swallow Greenhouse Damp Barrier
Damp Barrier

20mm black PVC section screwed to the bottom of the greenhouse stops damp rising into the timber.

Swallow Products
Swallow Products

Swallow GB Ltd prides itself on its attention to detail, offering products that are not only functional but also enhance the beauty of any garden. Their greenhouses are built to last, with features like toughened safety glass and automated ventilation systems, ensuring an optimal growing environment..

Swallow 12 Year Warranty
12 Year Warranty

Swallow products come with a 12 year warranty that covers the Timber for Rot, Decay and Insect Infestation. Buildings must be re-treated inside and outside annually with a high-quality wood preserver according to the maintenance advice

Frequently Asked Questions

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