Sioux Chief 525 series StrongArm&rade; with LockBlock&rade; bracketing system shall be used where necessary for securing CTS stub outs when penetrating a wall. Bracket shall be corrosion resistant with twisted ends to mount to the surface of a wood or metal stud wall. System shall include approved hardware. System shall include slideable, plastic block device to position and secure CTS stub out at any desired location within the stud cavity. When screws on blocks are tightened, compression of blocks prevents lateral movement on brackets and simultaneously compresses on tube to prevent stub out movement. LockBlocks&rade; shall be compatible with copper, CPVC, or PEX tube. System shall be IAPMO certified.