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Greenhouses, Frames and Growing Accessories

Gardener 300 3 × 4 m Polycarbonate Greenhouse, 4 mm

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The greater the purchase, the bigger discounts you get.
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Gardener 300 Polycarbonate Greenhouse

A 3 × 4 m growing space The Gardener 300 is a 3 × 4 m polycarbonate greenhouse with a listed area of 12 m². It measures 400 cm long and 212 cm high. The clear 4 mm polycarbonate covering and galvanised steel frame identify the main materials. Compare these dimensions with your planned site before choosing a position.

Details to help you choose

  1. A defined planting area: The listed 12 m² area gives you space to arrange plants and growing equipment.
  2. 4 mm polycarbonate covering: The covering is clear 4 mm polycarbonate. The panel specification lists four sheets / 6 m.
  3. Two doors: Two doors are included for access to the greenhouse.
  4. Two windows: Two windows provide openings for ventilation.
  5. Galvanised steel frame: The frame is galvanised steel, with arches spaced 100 cm apart. Galvanising is the stated corrosion protection.

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

Flexible payment options
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.



  • Article number: PRT10100401-00341-4mm
  • Colour: Colourless / transparent
  • Size: 3x4 m
  • Height: 212 cm
  • Length: 400 cm
  • Area: 12 m2
  • Polycarbonate: 4 mm
  • Polycarbonate sheets: 4 sheets / 6 m
  • Doors: 2
  • Windows: 2
  • Frame: Galvanised steel
  • Frame thickness: ∎ 20x40 & 20x20 mm
  • Rust protection: Galvanising
  • Spacing between arches: 100 cm
  • Packaging: Number of packages: 1; package dimensions: 217 × 120 × 9 cm; package weight: 20 kg; Number of packages: 1; package dimensions: 177 × 90 × 4 cm; package weight: 10 kg; Number of packages: 2; package dimensions: 98 × 14 × 8 cm; package weight: 20 kg; Number of packages: 1; package dimensions: 29 × 8.5 × 12 cm; package weight: 2.2 kg; Number of packages: 1; package dimensions: 210 × 70 × 70 cm; package weight: 20 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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