Comparison : Item # Z8125-06PG, Z8125 Series Z-Strut™ Channels (1-5/8" x 13/16")
Item # Z8125-12PG, Z8125 Series Z-Strut™ Channels (1-5/8" x 13/16")
Item # Z8125-18PG, Z8125 Series Z-Strut™ Channels (1-5/8" x 13/16")
Item # Z8125-24PG, Z8125 Series Z-Strut™ Channels (1-5/8" x 13/16")
Item # Z8125-30PG, Z8125 Series Z-Strut™ Channels (1-5/8" x 13/16")