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A1 Sheds are specialist suppliers of the UK's best quality wooden garden sheds, summerhouses, playhouses, greenhouses, log cabins, gazebos, arbours, plastic sheds, metal sheds, and animal housing. They are 100% independent... and always give totally impartial, honest advice! A1 Sheds place small data files (cookies) on your device. This standard practice is essential for a high quality online experience, and collects some information about browsing behaviour. For more information read our Cookie Policy. By using this website, you consent to cookies being used in accordance with our policy. If you don't consent, you should disable cookies in your browser or refrain from using the site.


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Grosfillex® UTILITY-3B Plastic PVC Shed

Grosfillex® UTILITY-3B Plastic PVC Shed

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Grosfillex® UTILITY-3B Plastic PVC Shed Grosfillex® UTILITY-3B Plastic PVC Shed Grosfillex® UTILITY-3B Plastic PVC Shed Grosfillex® UTILITY-3B Plastic PVC Shed

Product Code [22803137]

Our Price: £899.00 RRP: £1,199.00

Storm Anchors
Wall Mount Kit

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Grosfillex® Utility 3B Apex PVC Plastic Shed

Grosfillex® Utility 3B is a PVC (plastic) shed, approximately 6'x6'. This high quality garden shed is available in a pale blue colour with white trims and roof. The Grosfillex® Utility shed comes with a 10-year manufacturers guarantee for long-term peace of mind, and are perfect where trouble-free storage of garden tools and smaller equipment is required. They are made using the highest quality UV-resistant, durable PVC and are 100% maintenance-free. No painting or preservative is required, and this plastic garden shed is also rot proof and rust proof.

The 'stay dry' weather-proof design will ensure your contents remain protected and dry. A single door is fitted as standard, and are secured with a handle & lock. No floor is supplied with this building, therefore a solid base is recommended. The full Grosfillex® Utility range is available in 4 sizes - 6x6 up to 10x11.  


  • FREE delivery*
  • 10-YEAR manufacturers warranty*
  • 26mm thick walls
  • Long-lasting, non-yellowing virgin PVC
  • Eco-friendly plastic is 100% recyclable
  • Resistant to UV, heat, cold and extreme weather conditions
  • Lockable door with metal handles
  • Integral vents c/w insect filters
  • 100% maintenance free resin construction won't rust, rot or splinter
  • High quality components allow for easy assembly
  • Optional accessories available

Quality Construction

The Grosfillex® Utility range of PVC plastic sheds are made to an extremely high standard, using the best quality virgin pvc. This ensures a non-yellowing finish, great product stability and much more substantial weight in the finished product. The walls are 26mm thick and are double-skinned. Windows are made from strong, safe perspex.


Straightforward Assembly

These buildings are supplied in a flat-pack modular design, with smaller panels allowing for easy transportation through your house or garage! The precision cut components ensure that assembly is straight-forward for the competent DIY'er, and no professional experience is necessary. Normally 2 people can usually complete the job in 4-6 hours.

Doors & Locking System

A single door is supplied as standard. It is fitted with a metal lever handle set, complete with an internal mortice lock.

Windows & Ventilation

The Grosfillex Utility Shed comes with a high level fixed window in the door. And high level vents are fitted for ventilation.

Optional Accessories

This garden building is supplied as a full kit, complete with all necessary fixings, fastenings and roofing materials, however there are a few optional accessories available such as the Storm Anchor Kit (for extremely exposed sites), and a Wall Mounting Kit for hanging tools or shelves.


Please contact us prior to purchase if you have any queries regarding the dimensions, or if you require exact sizes.
Grosfillex Utility Ext. Dimensions at Walls (mm) Ext. Dimensions at Roof (mm) Door Size (mm) Window Weight
Model Reference Width Depth Eaves Height Width Depth Ridge Height Width Height Quantity (kg)
3B 22803137 1700 1620 1880 2140 1880 2239 720 1800 1 (in door) 110

Information shown above has been supplied by the manufacturer, and is as accurate as possible (errors and omissions excepted), however it is intended only as a guide. *We recommend making your base to the external dimension shown above. 

Please ensure that regular general maintenance is carried out on all moving parts.


All products are delivered sectional/flat-packed to kerbside unless stated otherwise. Deliveries are available for most of mainland England, Wales, Ireland and Scotland, however deliveries within the Grey Zone will be subject to a surcharge depending upon the area and the product weight. Please see the map below. 

Simply Garden Buildings - Grosfillex Delivery Areas

The current delivery lead time shown is typical for Red Zones, however this is approximate and cannot be guaranteed. The lead time may be longer for outlying areas. Installation is available for most delivery areas, however this will extend the lead time to approximately 28 days.

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If you prefer, you can order any of our garden buildings in person from our Edinburgh display centre, or you can visit our sister website Simply Summerhouses for even more buildings to choose from.