T-slot structural framing

T-slot structural framing is a framing system consisting of lengths of square or rectangular extruded aluminium, typically 6105-T5 aluminium alloy, with a T-slot down the centerline of one or more sides.

[1] While the precise history of the T-slot framing system is not known, advancement in extrusion press technology in the early 1950s allowed for economic production of aluminium profiles,[2] and examples of use can be found from the early 1960s.

[3] Although no published standard defines the system, it is produced in a series of conventional sizes which allows for compatibility between manufacturers.

T-slot framing is divided into metric and fractional (imperial) categories.

Rectangular cross sections are also available which measure x by 2x (where x is the defined width) - e.g. 40mm by 80mm for 40 series.