Whether you’re wiring a new home, remodeling an existing space, or completing a commercial tenant build-out, every component behind the walls contributes to the safety and longevity of the electrical system. While electrical boxes may not receive as much attention as breakers or wiring, choosing the right box can simplify installation, improve durability, and reduce callbacks.

For decades, both metallic and non-metallic electrical boxes have been used successfully across residential and light commercial applications. Today, however, advances in engineering materials have made non-metallic boxes an increasingly popular choice for electricians, builders, and contractors.

Here’s why.

Corrosion Resistance That Lasts

Unlike steel boxes, non-metallic electrical boxes won’t rust or corrode when exposed to moisture or humid environments. This makes them especially valuable in:

• Basements

• Garages

• Laundry rooms

• Coastal regions

• Agricultural buildings

• Outdoor applications when properly rated

Because corrosion isn’t a concern, installers can expect long-term performance without worrying about deterioration affecting the enclosure over time.

Faster Installation

Time matters on every jobsite.

Many non-metallic boxes are designed with installer-friendly features that help reduce installation time, including:

• Integrated cable clamps

• Molded mounting brackets

• Multiple conduit entry options

• Lightweight construction

• Smooth interior surfaces for easier wire management

Reducing installation steps helps contractors stay productive while maintaining code compliance.

Electrical Safety Advantages

One of the inherent benefits of non-metallic boxes is that they do not conduct electricity.

Because the enclosure itself is non-conductive, installers don’t have to worry about the box becoming energized if a conductor accidentally contacts the enclosure. While proper grounding practices must always follow NEC® requirements, using a non-metallic box can reduce certain shock hazards during installation and future maintenance.

Built to Handle Tough Conditions

Modern fiberglass-reinforced and engineered thermoplastic boxes are designed for demanding environments.

Quality non-metallic enclosures resist:

• UV exposure

• Chemicals

• Salt spray

• Extreme temperatures

• Physical impacts

These characteristics make them suitable for a wide variety of indoor and outdoor installations where traditional metal boxes may require additional protection.

Designed for Today’s Wiring Needs

Electrical systems continue to evolve as homes and facilities incorporate:

• Smart home devices

• EV chargers

• Solar equipment

• Home automation

• Security systems

• Network infrastructure

Non-metallic electrical boxes are available in numerous sizes and configurations to accommodate these evolving applications while maintaining organization and accessibility.

Code Compliance Matters

Regardless of the material selected, electrical boxes must always be installed according to the latest National Electrical Code® (NEC®) and local building requirements.

Choosing a quality listed product from a trusted manufacturer helps ensure the enclosure is designed to meet the performance requirements expected in residential and commercial installations.

Why Contractors Continue to Choose Allied Moulded

For decades, Allied Moulded has specialized in high-performance non-metallic electrical products engineered for reliability and ease of installation.

From residential outlet boxes to industrial enclosures, Allied Moulded products are designed to help contractors:

• Install faster

• Reduce maintenance concerns

• Improve long-term durability

• Meet demanding environmental conditions

As electrical systems become more sophisticated, choosing dependable non-metallic solutions helps ensure installations continue performing for years to come.