Design radiator Zehnder Universal, double-layered made of horizontally arranged precision steel tubes with surrounding square tubes, fully welded. Invisible weld seams achieved through laser welding technology. Horizontal tubes with a diameter of 23 mm, square tubes 30 x 30 mm, heat output tested according to DIN EN 442. Featuring recessed connections on the lower room-side square tube (center 1/2" for supply/return and outside left and right 1/2" for electric heating cartridge), with a vent valve. Delivered ready for installation with elegantly designed wall brackets for concealed mounting. Radiator with powder-coated finish in RAL 9016 color. Other versions available upon request.