Sapa Window 1086 inward opening/ fixed is based on a strong and stable construction with 86 mm deep profiles. These are basic insulated with 42 mm glass fibre reinforced polyamide strips. For optimized energy performance it can be fitted with special insulation strips Sapa Thermo N9 and is then called Window 1086 SX. Rebate for glass 22-56 (64) mm.