Production Products, Inc. is proud to offer Condu-lock duct reinforcement hardware. A brand that has become interchangeable with duct reinforcement hardware is now also offered with ULTRA- TUFF coating for aluminum and stainless-steel applications. The special zinc-based plating offers a corrosion resistant finish with guaranteed durability. Condu-Lock is stronger than plastic and will keep conduits in place all while complying with SMACNA regulations for duct rod security. Strong and leak free, there’s a reason Condu-lock has been reinforcing Americas ducts for 34 years!