Comparison : Item # Z1625-06PG, Z1625 Series Z-Strut™ Channels (1-5/8" x 1-5/8")
Item # Z1625-12PG, Z1625 Series Z-Strut™ Channels (1-5/8" x 1-5/8")
Item # Z1625-18PG, Z1625 Series Z-Strut™ Channels (1-5/8" x 1-5/8")
Item # Z1625-24PG, Z1625 Series Z-Strut™ Channels (1-5/8" x 1-5/8")
Item # Z1625-30PG, Z1625 Series Z-Strut™ Channels (1-5/8" x 1-5/8")