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20ft Wide Outdoor Summerhouses


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Malvern Studio Pent

A modern light and spacious garden room. Featuring stylish, glass to ground double glazed windows as standard, making it ideal for use as a summerhouse or garden office.

  • 16 sizes available
  • Summerhouse or garden office
  • Double glazed windows and doors
  • Optional painted finish

Prices from 2,508

Prices from 2,508

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Malvern Studio Pavilion

A light and spacious garden room that can be used as either a summerhouse or a garden office. The glass to ground double glazed windows run across the front aspect with double doors and an opening window in either end.

  • 20 sizes available
  • Summerhouse or garden office
  • Double glazed windows and doors
  • Optional painted finish

Prices from 2,508

Prices from 2,508

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Malvern Arley Pent

A hybrid of summerhouse and office, the Arley Pent includes double glazed windows as standard and can be fitted with fully insulated walls and ceiling. Available in 11 sizes from 8ft x 6ft to 20ft x 10ft.

  • 11 sizes available
  • Summerhouse or garden office
  • Double glazed windows and doors
  • Optional painted finish

Prices from 2,056

Prices from 2,056

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Malvern Arley Pavilion

The Arley Pavilion combines both summerhouse and office. The optional insulation allows you to use your buildings all year round. The Arley Pavilion is available in 20 sizes and three timber choices.

  • 20 sizes available
  • Double glazed windows and doors
  • Summerhouse or garden office
  • Optional paint finish

Prices from 2,056

Prices from 2,056

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Malvern Arley Pavilion High

The Arley Pavilion High is an adaptation of our popular Arley Pavilion, with extra height!The optional insulation allows you to use your building all year round. The Arley Pavilion High is available in 15 sizes and three timber choices.

  • 15 sizes available
  • Extra-height version
  • Double glazed windows and doors
  • Optional paint finish

Prices from 2,980

Prices from 2,980

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20ft Wide Summer Houses

Each one of these garden buildings is available in a 20ft width. Most of our garden summerhouses are available in a choice of size to ensure that we have something to fit into any garden. GBC Group specialise in the supply, delivery and installation of garden summerhouses - with garden rooms from 6ft wide x 6ft deep. Our 20ft wide summerhouse range features the Malvern Traditional, Malvern Cottage, Crown Pavilion and Nordic range of summerhouses. As you can see from the images above, these buildings are built in a range of shapes.

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