... , okoume, spapelli, cherry, russian red pine Solid wooden window/ doorAluminium solid composite window/ doorMain colors for solid wood doors and windows: ash ... <700Heat preserving Capability GB/T8484-2002, Grade 7, 3.0>k≥ 2.5Soundproof CapabilityGB/T8485-2002, Grade 4, 35&le ...