80/20 Metric T-Slotted Profiles 80/20 has expanded its 20, 30, and 45mm T-slotted profile series by adding two new profiles to each: 20 x 40mm, 40 x 40mm, 30 x 60mm, 60 x 60mm, 45 x 90mm and 90 x 90mm. The new profiles are available in 4 or 6 meter stock lengths, or cut to desired length, with a standard clear anodized finish.