3D Cantileverd Infills ALU-04-XX ALU-04-01 38X10mm Infills ALU-04-02 50X10mm Infills ALU-04-03 70X10mm Infills ALU-04-04 38x16mm Infills ALU-04-05 65x16mm Infills ALU-04-06 75x16mm Infills ALU-04-07 90x16mm Infills ALU-04-08 Custom rectangular/square/round tube options available at custom spacings