G
Greenhouse Compare
First Tunnels · Polytunnel

First Tunnels 14ft (4.27m) Wide Polytunnel, 20ft long

A large 14x20 tunnel for keen veg growers

FI
Last price we saw
£1,051
Score 3.0 out of 10

Prices move a lot, especially in spring. The retailer shows the current price. We earn a small commission if you buy through this link, and you pay the same. More on that.

Is the First Tunnels 14ft (4.27m) Wide Polytunnel, 20ft long any good?

With 3 out of 10, the First Tunnels 14ft (4.27m) Wide Polytunnel, 20ft long ranks 38 of 38 in our comparison. Strengths: About 26 m2 of growing space for just over £1,000, 35 mm tubing stands up to wind and snow better than 25 mm. Weakness: Needs a big flat site, and many allotments ask permission first. Best for: Allotment holders and smallholders who want to grow food under cover all year.

In short

The 14x20 is First Tunnels' largest domestic model, with 35 mm galvanised high-tensile steel hoops, 248 cm of headroom and about 26 m2 of floor. Doors sit at each end, with side vents as an extra.

Best for: Allotment holders and smallholders who want to grow food under cover all year

What we like

  • About 26 m2 of growing space for just over £1,000
  • 35 mm tubing stands up to wind and snow better than 25 mm
  • Room for beds on both sides and a wide path

What we don't

  • Needs a big flat site, and many allotments ask permission first
  • Side vents cost extra, and a tunnel this size gets hot without them

Specifications

TypePolytunnel
GlazingPlastic cover, 0.2 mm
Framegalvanised high-tensile steel hoops (E370), 35 mm, 5ft or 7ft hoop spacing
Size14 x 20 ft (4.3 x 6.1 m)
Floor area26 m²
Ridge height2.48 m
Eaves height0.99 m
Roof vents0
Side vents or louvres0
Doortwo doors, one at each end (hinged or sliding, chosen in the configurator)
Base includednot published
Gutters includedNo
Automatic vent openerNo
Snow loadnot published
Weightnot published
Maker's guaranteenot published

Sources: the maker's specs, specialist retailers and the product page on Amazon.co.uk. If a value is missing, we found it published nowhere.

Score: 3.0 out of 10

Worked out from the specs above. How we score.

Glazing0.5 / 2
A plastic cover keeps little heat in and usually lasts a few seasons.
Price per m²2 / 2
£40 per m² of floor space.
Ventilation0.5 / 2
The door is the only way to let air in.
In the box0 / 2
You buy the base, gutters and vent opener separately.
Guarantee0 / 2
We found no maker's guarantee, only your statutory rights under the Consumer Rights Act.

First Tunnels 14ft (4.27m) Wide Polytunnel, 20ft long: common questions

Is the First Tunnels 14ft (4.27m) Wide Polytunnel, 20ft long any good?

With 3 out of 10, the First Tunnels 14ft (4.27m) Wide Polytunnel, 20ft long ranks 38 of 38 in our comparison. Strengths: About 26 m2 of growing space for just over £1,000, 35 mm tubing stands up to wind and snow better than 25 mm. Weakness: Needs a big flat site, and many allotments ask permission first. Best for: Allotment holders and smallholders who want to grow food under cover all year.

How big is the First Tunnels 14ft (4.27m) Wide Polytunnel, 20ft long?

It measures 14 x 20 ft (4.3 x 6.1 m), which gives you 26 m² of floor space. The ridge stands 2.48 m high.

Does the First Tunnels 14ft (4.27m) Wide Polytunnel, 20ft long need a base?

Yes, plan for one. Our data shows no base frame in the box, and without proper anchoring a strong gust can lift a light greenhouse.

What guarantee comes with the First Tunnels 14ft (4.27m) Wide Polytunnel, 20ft long?

We found no maker's guarantee. You still have your statutory rights under the Consumer Rights Act from the retailer.

How much does the First Tunnels 14ft (4.27m) Wide Polytunnel, 20ft long cost?

The last price we saw was £1,051, roughly £40 per m². Greenhouse prices often climb in spring, and the retailer shows the current price.

Polytunnels comparedLarge greenhouses, 8x10 ft and biggerPremium greenhouses from £1,000

Alternatives to the First Tunnels 14ft (4.27m) Wide Polytunnel, 20ft long

Compare every alternative to the First Tunnels 14ft (4.27m) Wide Polytunnel, 20ft long →

What you will need with it

Kit that plenty of buyers add to their basket. Affiliate links to Amazon.co.uk, how that works.

See every accessory →

Head-to-head comparisons