DN 50 perpendicular to the highly fire-resistant sealing of Ceiling penetrations in solid ceilings up to 120 min. Classification acc. to DIN EN 13501 for fire protection class El 120. Set consisting of: Fire protection collar, 2 cross-slotted head screws, identification plate Required core hole drilling: Diameter = 130 mm ( Diameter min = 129 mm, Diameter max = 133 mm) Application: Solid ceilings from 150 mm to 325 mm ceiling thickness Connecting pipe: PP-HT pipe according to DINEN 1451 (minimum length 100 mm) No grouting or filling of the interspace required Compatible with all TECEdrainline channels and covers.