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Greenhouses, Frames and Growing Accessories

TITAN 3 × 4 m Polycarbonate Greenhouse, 4 mm

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A 3 × 4 m greenhouse for growing under cover

Meet the TITAN greenhouse This TITAN greenhouse measures 3 × 4 m and has a stated growing area of 12 m². It is covered with 4 mm cellular polycarbonate and has a galvanised steel frame. The listed height is 200 cm. Compare these measurements with the space available for your planned greenhouse.

Key measurements and materials

  1. 4 mm cellular polycarbonate: The greenhouse has a 4 mm cellular polycarbonate cover. This gives you the stated covering material and thickness when comparing greenhouse options.
  2. Galvanised steel frame: The frame is made from galvanised steel. Its listed sections are 40 × 20 mm and 20 × 20 mm, giving you specific details to consider when comparing frame construction.
  3. Arch spacing and thickness: The arches are listed as 1 mm thick and spaced 67 cm apart. These measurements describe the frame layout without implying a particular load capacity or weather performance.
  4. Wide door opening: The door is 89 cm wide. Use this measurement to assess whether the opening suits your access needs for tending plants and moving items in or out.
  5. 12 m² growing area: The listed length is 400 cm and the overall size is 3 × 4 m, with a stated area of 12 m². The greenhouse height is 200 cm; compare these dimensions with your planned layout.

Experiences with Bloomcabin

  1. "Ordering from Bloomcabin was straightforward, and the team answered my questions before I purchased. I'm very happy with my choice." – Olivia Wilson
  2. "My order arrived carefully packaged and was exactly as described. The quality met my expectations, and I would happily purchase from Bloomcabin again." – Jack Thompson
  3. "I had a question about my delivery, and Bloomcabin's customer support was friendly and helpful. They kept me informed and made the whole experience easy." – Charlotte Brown

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We offer flexible and secure payment methods to make your shopping experience smooth and convenient.

Order now and save 45% with Bloomcabin. Bring your home and garden ideas to life, with helpful customer support from choosing your product to arranging delivery.



  • Item number: Titan-3x4-PR.00339-4mm
  • Colour: Clear / transparent
  • Size: 3x4 m
  • Height: 200 cm
  • Length: 400 cm
  • Area: 12 m2
  • Polycarbonate thickness: 4 mm
  • Frame: galvanised steel
  • Frame profile: ∎ 40x20 & 20x20 mm
  • Arch thickness: 1 mm
  • Door width: 89 cm
  • Corrosion protection: galvanising
  • Arch spacing: 67 cm
  • Packaging: 1 package; dimensions: 20 × 10 × 10 cm; weight: 8 kg; 1 package; dimensions: 210 × 70 × 70 cm; weight: 32 kg; 1 package; dimensions: 300 × 200 × 15 cm; weight: 70 kg
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10 year warranty
Bloomcabin takes pride in its high-quality products and maintains these standards every day through a range of manufacturing and quality-control processes. This is backed by a 20-year warranty covering wood rot in timber structures and a 10-year warranty covering functional defects.
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