Southwire 669SRT Compression Raintight Emt Coupling 3.5 in Clearance

The SOUTHWIRE 669SRT is a 3.5-inch compression raintight EMT coupling designed to join two sections of electrical metallic tubing in wet or outdoor locations. This fitting creates a secure, watertight connection without the need for set screws, relying instead on a compression-style design that locks to the conduit when tightened. It is suited for use in raceway systems where moisture exposure is a concern, including exterior walls, rooftop equipment, and other damp or wet-rated environments. Licensed electricians and electrical contractors install this fitting as part of compliant EMT conduit runs.

The 669SRT is intended for 3.5-inch EMT conduit installations in residential, commercial, and light industrial settings. Raintight compression couplings are commonly specified where local codes or the National Electrical Code require fittings listed for wet locations. This coupling is appropriate for use in exposed outdoor conduit runs, service entrance work, and any application where the conduit system may be subject to rain, condensation, or washdown conditions.

Key Features

• Compression-style design provides a raintight, secure connection without set screws
• Sized for 3.5-inch EMT conduit trade size
• Listed for use in wet and damp locations
• Suitable for exposed outdoor and service entrance conduit runs
• Compatible with standard EMT conduit installations governed by NEC requirements

Compatibility

Designed as an OEM-style replacement and standard trade fitting for 3.5-inch EMT conduit systems in wet or raintight-rated raceway installations.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code and applicable local codes. De-energize all circuits in the affected raceway before beginning conduit work. Tighten the compression nut to the manufacturer-recommended feel using appropriate conduit wrenches — do not overtighten, as this may deform the fitting. Ensure conduit ends are reamed and deburred before inserting into the coupling to maintain a clean, secure fit.

Technical Specifications

• Trade Size: 3.5 inches
• Fitting Type: Compression Raintight EMT Coupling
• Weight: 21 pounds
• UPC: 75133883662

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: 669SRT