Fiberglass electrical enclosure
Our fiberglass electrical enclosures are engineered for durability, safety, and ease of installation. Built to meet UL 4X and IP66 standards, these enclosures provide superior protection in harsh indoor and outdoor environments.
✓ UL Listed 4X & IP66 Rated: Excellent resistance to water, dust, corrosion, and impact.
✓ Hinged Lockable Pull Latch (HPL): Secure access with user-friendly operation.
✓ Flexible Mounting Options:
Easy installation of swing panel, dead front, or DIN rail.
Slotted mounting holes allow compatibility with various commercial mounting systems and simplify future adjustments.
Fiberglass electrical enclosure manufacturer
Hofengfab specializes in low-volume, high-mix, made-to-order solutions, offering over 1,600 customizable options tailored to your exact specifications—including height, width, depth, material, rating, and certifications. We ensure fast turnaround times, with samples ready in 7–10 working days and mass production completed within 15–25 working days. Whether you need a small batch or a large order, we deliver on time.









Technical Specifications
Material: Reinforced fiberglass (non-metallic, non-conductive)
Ingress Protection: IP66 / NEMA 4X
Locking Mechanism: Stainless steel hinged pull latch
Mounting: Pre-slotted holes for wall or pole mounting
Accessories Supported: Swing panel, dead front, DIN rail
Operating Temperature: -40°C to +85°C
Color: Standard light gray (custom colors available)
Manufactured to meet industry standards and maintain environmental rating according to NEMA type.Available from 1 unit onwards with a short lead-time, we can assist you with the creation of your original design.
E-Mail Us:vivian@hofengfab.com
Fiberglass Electrical Enclosure vs. Metal Enclosure
✔ No rust or galvanic corrosion.
✔ Lower maintenance costs.
✔ Better insulation properties.
✔ Lighter weight for easier installation.
Disadvantages:
✖ Higher initial cost than polycarbonate or mild steel.
✖ May degrade under prolonged high heat (>250°F).

Related Products
We serve industries including industrial automation, telecom/rackmount systems, renewable energy, medical equipment, and military/aerospace applications - delivering robust, application-specific housing solutions engineered for reliability.
FAQ
What are fiberglass electrical enclosures made of?
Fiberglass electrical enclosures are constructed from reinforced fiberglass, which is a non-metallic and non-conductive material. This makes them ideal for electrical safety, corrosion resistance, and durability in harsh environments
What does IP66 mean in terms of protection?
IP66 (Ingress Protection) means the enclosure is dust-tight (no dust can enter) and offers protection against powerful water jets from any direction. It is highly suitable for outdoor use and environments exposed to rain, snow, or dust.
What is the NEMA 4X rating?
The NEMA 4X rating indicates that the enclosure is weather-resistant, providing protection against windblown dust, rain, snow, and splashing water. It also offers corrosion resistance, making it ideal for outdoor and corrosive environments.
Can fiberglass enclosures be used outdoors?
Yes, fiberglass electrical enclosures are perfect for outdoor use due to their excellent weather resistance, corrosion resistance, and UV stability. They provide reliable protection in harsh weather conditions.
What is the temperature range for these enclosures?
Our fiberglass electrical enclosures operate effectively within a temperature range of -40°C to +85°C. This makes them suitable for both extreme cold and heat, ensuring the safety of electrical components.
How are these enclosures mounted?
Fiberglass enclosures come with pre-slotted holes for wall or pole mounting, making installation flexible and easy. They support various mounting options, including swing panels, dead fronts, and DIN rail mounting systems.
What are the locking mechanisms used in fiberglass enclosures?
Our enclosures feature a stainless steel hinged pull latch (HPL), providing secure, lockable access while allowing easy operation. This mechanism ensures that the enclosure is tamper-resistant and offers enhanced safety for sensitive equipment.
Are custom sizes available for fiberglass enclosures?
Yes, we offer custom-sized fiberglass enclosures to meet your specific project requirements. If you need a particular size, configuration, or feature, please contact us for tailored solutions.