TRUE INSIDE DIAMETER IS 4-9/16" NOT 4". Model 508 Split Ring Hanger - Hinged - Measured in Iron Pipe Sizes. (1/2" threaded rod). Allows for piping runs close to ceilings or walls. Maximum load 180 lbs

• Suitable for fire protection, fire suppression, plumbing, and the hanging of steel pipe and iron pipe.
• For suspension of non-insulated stationary pipe lines. Zinc Plated Malleable Iron
• TRUE INSIDE DIAMETER IS 4-9/16" NOT 4".
• 4" Iron Pipe Size for 1/2" Threaded Rod

Suitable for fire protection, fire suppression, plumbing, and the hanging of steel pipe and iron pipe.Argco