Doors of lift shafts with standardised fire resistance limit double-leaf horizontal-sliding with thermal insulation of sashes telescopic side-opening type SM.2T.EI30, with overall dimensions of the opening in the light: width from 650 to 1250 mm, height from 2000 to 2300 mm, produced according to TU 28.22.19-004-12357569-2021 "Lift shaft doors with fire resistance limit E30, EI30, EI60. TECHNICAL CONDITIONS."
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