NEMA 1, 3R, 4, 4X & 12 Enclosures and Junction Boxes
Povolny Specialties manufactures NEMA-rated electrical enclosures and junction boxes designed to protect critical electrical components in indoor and outdoor environments. We offer both standard and custom enclosures built to meet NEMA 1, 3R, 4, 4X, and 12 requirements for commercial, industrial, and infrastructure applications.
NEMA Enclosures & Junction Box Capabilities
NEMA-Rated Protection
Built to meet NEMA 1, 3R, 4, 4X, and 12 standards for indoor, outdoor, and harsh environments—protecting electrical components from weather, moisture, dust, and corrosion.
Material Options for Any Environment
Manufactured in aluminum, carbon steel, and stainless steel to match environmental conditions, corrosion requirements, and project specifications.
Custom Enclosures & Junction Boxes
From standard J-boxes to fully custom enclosures, we build to your exact specifications for new installations and retrofit applications.
Precision Fit & Assembly
Engineered for accurate component fit-up, clean mounting surfaces, and efficient field installation—reducing rework and install time.
Controlled Manufacturing Process
Consistent fabrication from prototype through production using CNC cutting, forming, and assembly processes to ensure repeatable quality.
Built to Your Specifications
Custom sizes, cutouts, knockouts, mounting options, and finishes—designed to meet contractor, OEM, and infrastructure project requirements.
Typical Applications
Our custom enclosures are engineered to protect critical systems across a wide range of public and private infrastructure, providing durable solutions for complex environmental needs.
- Street Lighting Systems
- Traffic Signal Controls
- Ball Field Lighting Controls
- Irrigation Systems
- CCTV Monitoring Stations
- Temporary Power Solutions
- Utility Carts & Mobile Service
Get a Custom Quote for Your Next Infrastructure Project
Count on Povolny Specialties for reliable lead times and expert support on every custom enclosure order.