MQK-21 D NEW MQK-21 D NEW Profile: MQ-21-D Surface finish: Electrogalvanized - for dry indoor use only Material composition: S235JR - DIN EN 10025 Features & Applications Features Serrated C-section edge Easy assembly and higher shear loads Dimension marking Pre-marked dimensions make installation, assembly and measurement easy Double channel, unslotted Applications Stand-alone use on ceilings, walls and floors or in conjunction with channel systems Recomended for installation in dry interiors Installation of cable trays, air ducts and pipe supports