Direct Polytunnels 18ft × 24ft Conventional Polytunnel Kit (Commercial Size)
Grow more, all year. A commercial-grade frame, diffused professional cover, and smart tensioning design give you full standing height across almost the entire footprint (from ~0.3m/1ft inwards), excellent light spread, and proven wind performance.
What’s included (core kit)
- Frame: 33mm thick-walled Z35 high-tensile galvanised steel hoops (spaced at 6ft / ~1.83m), roof bars, and diagonal storm bracing.
- Foundations: Heavy-duty galvanised ground tubes (hoops locate inside; can be hammered or concreted). Lift-to-tension design for a tight, long-lasting cover.
- Fixings: Cast-iron, hot-dip galvanised clamps and fittings to BS EN ISO 1461.
- Cover: XL Horticulture SunMaster Diffused professional polythene (5-year guarantee; typical life 7–10 years). Anti-condensation / anti-fog / anti-drip; thermicity >65% to reduce heat in very hot weather.
- Protection & spares: Anti-hot-spot tape kit and 1 roll of polythene repair tape.
- Guides & support: Full colour photo instructions plus help from our UK team.
Optional Door Frames Kit (select on product page or supply your own timber)
- 2 × 4"×2" tanalised timber end frames, plus 1"×2" cleating timber.
- 2 × sets of double 3"×2" tanalised hinged doors with fixings.
- Easy-to-follow instructions (some cutting/drilling required).
Note: All kits include enough polythene to cover the doors whether you choose our timber pack or supply your own.
Why growers choose this model
- Full-height working space: ~2.74m high and standing height from ~0.3m in from each side — great for benches and tall crops.
- Wind-ready geometry: Full curved conventional design for improved aerodynamics on exposed sites.
- Built to last: Z35 high-tensile steel frame (long service life) and a tight cover for longevity.
Build & installation
- Designed for straightforward assembly by 2–3 people.
- “Lift the hoop” tensioning step helps maximise cover tightness and lifespan.
Delivery
- Free mainland UK delivery. We’ll contact you to confirm a delivery date (typically within 5 working days).
- Surcharges: Northern Ireland, Scottish Highlands/Islands, Isle of Wight: postage charge + £50.
Warranty & lifespan
- Professional cover: 5-year guarantee; typical life 7–10 years (tight covers last longer).
- Galvanised steel frame: long service life in normal conditions.
Questions? Our team is happy to help with sizing, siting, and installation. Please contact us via email (sales@directplants.co.uk)
