We sell the polycarbonate sheets individually for any do it yourselfers 4 x 8 = $120 4 x 10 = $155 4 x 12 = $185 4 x 16 = $245 U channel, $16 for 12ft section H channel, $23 for 12ft section H channel, $38 for 16ft section Stainless steel screws with stainless washers w neoprene rubber $20 for 25 screws and washers 8mm Twin-Wall Polycarbonate Sheets This UV-resistant greenhouse material is 12 times lighter than glass. These easy-to-handle, lightweight sheets are a breakthrough in greenhouse technology. • Also widely used for construction, rain shields and soundproofing applications. • Will not film over after long exposure to sunlight. • Tough, practically shatterproof, 8 mm polycarbonate material maintains light transmission over years of use. • Hollow, twin-wall construction gives superior insulating capabilities for better heat retention and lower fuel costs. • Weighs only 1.5 KG/m2—1/12 that of glass. • Virtually no UV penetration. • Highly flame resistant, with a flashpoint of 1,166˚F. • 10 year warranty. call or text 1-250-415-9628