1515-UL-Black-FB is a 1.50” x 1.50” ultra-lite fractional 15 series square T-slot profile with four open T-slots, one on each 1.50” face. The profile has align-a-grooves to assist in alignment when connecting profiles. The 1515-UL-Black-FB profile is compatible with all 15 series fasteners. The 1515-UL-Black-FB profile is the lightest in the 1515 profile family and lends itself to machine guards, sound enclosures, work benches, panel mount racks or displays. The four open T-slots enable access from any direction and are useful for mounting accessories.