Lennox 64P72 - (620-404) 4" Square Box Extension Ring, 1/2" Deep, 1/2 & 3/4" K.O.s, 400 Series
The Lennox 64P72 (620-404) 4" Square Box Extension Ring is a durable and dependable solution designed to extend the capacity of standard 4" square electrical boxes. Constructed from high-quality steel, this extension ring measures 1/2" in depth and features both 1/2" and 3/4" knockouts (K.O.s) for added versatility in conduit and cable entry.
Part of the 400 Series, this component is engineered for use in a wide range of commercial, industrial, and residential electrical applications where extra box depth is needed to accommodate wiring devices, splices, or conduit fittings. It provides a secure and code-compliant means to expand box space while maintaining structural integrity and safety.
Key Features:
- Model: 64P72 (620-404)
- Type: 4" Square Box Extension Ring
- Depth: 1/2"
- Knockouts: Combination 1/2" & 3/4" K.O.s
- Series: 400 Series
- Material: Steel construction for long-lasting durability
- Application: Ideal for surface-mounted or concealed electrical installations
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