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The L H Dottie Co HW409 is a two-hole pipe strap sized for 3.5-inch pipe. It provides a rigid, secure mount point that fastens pipe runs directly to structural surfaces such as framing members, joists, or concrete with two fastener points for added holding strength. This style of strap is a standard hardware accessory used across plumbing, HVAC, and general mechanical piping installations. It ships as a single unit and is a common component in both new construction and retrofit work where pipe support and alignment are required.
The HW409 is suited for residential and light commercial applications where pipe runs need to be anchored at regular intervals along walls, ceilings, or structural members. Two-hole straps are preferred over single-hole versions when the installation requires greater resistance to lateral movement or vibration. Typical use cases include supply and drain piping, conduit support, and mechanical system pipe runs in confined or high-traffic spaces where secure fastening is critical.
Designed as a standard two-hole pipe strap for use with 3.5-inch pipe in residential and light commercial mechanical installations.
Installation is performed by licensed plumbers, HVAC technicians, or general mechanical contractors depending on the piping system being supported. Fasten the strap securely to a structural member using appropriate anchors or screws rated for the substrate material. Follow local building codes and applicable standards such as the IPC or IFGC for required pipe support spacing and fastener requirements. Ensure the pipe is properly aligned before securing both fastener points to avoid stress on fittings or joints.
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