12ft Span Polytunnels - Specification Overview
|Foundation Tubes:||Thick-walled, heavy galvanised with cover tensioning system.||Hoops and Ridge Tube:||Z35 galvanised steel tube, diameter 25.4mm with a thicker wall of 1.5mm.|
|Polythene:||5 year guarantee with 7-8 years life expectancy.2 choices of polythene -Clear for the most natural light conditions800 Luminance strongest and best all-round growing conditions.||End Frames:||Tanalith treated timber, 1½" x 3½" (actual size), planed with rounded corners for easier handling and smooth appearance.|
Double-row of ¾" x 1½" Tanalith treated battens to secure the polythene cover.
|Brackets:||Galvansised for improved resistance to corrosion.Purpose-designed so each type of bracket is perfect for its intended use.||Corner Braces:||Z35 galvanised steel tube, diameter 25.4 x 1.5mm.|
Best design to ensure they don't encroach into the usable space whilst still supporting the end hoop at the optimum position.
|Bolts, Screws & Nails:||Galvansised or zinc plated for corrosion resistance.|
Coach bolts are used for timber connections.Steel-to-steel connections use Nylock nuts which can't vibrate loose.