SolFirsTech-RC Roof Clamp Series Dimensions (mm) A B C(°) SolFirsTech-RC-08 28 34 122 SolFirsTech-RC-09 20 20 123 SolFirsTech-RC-10 20 20 123 SolFirsTech-RC-11 25 23.8 132 SolFirsTech-RC-18 22 16 120 SolFirsTech-RC-21 52 12 135 SolFirsTech-RC-22 33.7 18 135 SolFirsTech-RC-23 33.7 18 135 Technical Details Installation  Metal Roof Wind Load  up to 60m/s Snow Load  1.4kn/m² Tilt Angle  Parallel to Roof Surface Standards  GB50009-2012, EN1990:2002, ASE7-05, AS/NZS1170, JIS C8955:2017, GB50429-2007 Material  Anodized Aluminum AL 6005-T5, Stainless Steel SUS304 Warranty  10 Years Warranty