Doors of lift shafts with a standardised fire resistance limit double-leaf horizontal-sliding with thermal insulation of sashes: central opening type SM.2C.E 30, with overall dimensions of the opening in the light: in width from 650 to 1050 mm, in height from 2000 to 2300 mm, produced according to TU 28.22.19-004-12357569-2021 "Elevator shaft doors with fire resistance limit E30, EI30, EI60. TECHNICAL CONDITIONS".
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