15 Series 3.0″ x 3.0″ SMOOTH Heavy T-Slotted Aluminum Extrusion.

SPECIFICATIONS:
Weight = 4.027 lbs/ft (5.993 kg/m)
Estimated Area = 3.356 in2 (21.652 cm2)
Moment of Inertia = Ix=3.379 in4 (140.645 cm4)
Iy=3.379 in4 (140.645 cm4)

These extrusions are 100% compatible with the following manufacturers:

• 80/20 #3030-S
• T-SLOTS #650012
• FRAME-WORLD #EX-3
• McMaster #47065T502

Extrusions have a clear anodized finish, and may have one end anodized as well.
They are in the “15 Series”, and have a slot opening of approx. 5/16″.