330 Series CALTRANS Traffic Enclosures

Southern Manufacturing offers 330 series enclosures to the traffic industry, including CCTV, ITS and DMS enclosures.
download our 330 enclosures brochure

We have, as standards, the 332; 336 and the 336S. All of our 330 series enclosures come standard with the "pagoda" top for rain and snow dispersal.

All of our enclosures are constructed from sheet aluminum, with double flanged door openings and neoprene cellular gasket to ensure a weather tight seal. The enclosure comes with butt hinges on each door (CALTRANS) and a three point locking system, which secures the door at the top, bottom and center. Locks are supplied with all 330 series enclosures. A two position door stop, allows the user to set the door at two separate pre-designated stop points for ease of access and to secure the door from wind gusts. In addition to standard 332, 336 and 336S enclosures we can customize the wiring in the enclosure to your exact requirements.

330 Series, CCTV & ITS Enclosures
NEMA 3R
UL Approved
DOT Approved
Custom Designs


As a leading manufacturer of traffic industry 330 enclosures, illuminated street name signs, blank out and lane control signs in the U.S., Southern Manufacturing has a history of quality and reliability that dates back to 1939.

Utilizing a clear vision for traffic safety, Southern Manufacturing is dedicated to improving technology and fabrication. At the same time we are keeping the highest standards of quality, reliability and low cost of operation for our customers. Southern's depth of engineering and manufacturing turn today's challenges into tomorrow's realities

330 Series Enclosures Options Available
Customized doors		Custom depths
Left and right opening doors		Pull out drawers for laptops
Specialized fan plates		Lighting
Sun shields		Pre-wiring
All styles of mounting available		Heating and/or air conditioning
Racking		Universal power supplies
Shelves		CCTV interface enclosures (GDOT)
Power strip outlets		#2 Corbin lock standard (other locks available)

330 Series Enclosures Ventilation and Finishes
Vent slots are provided on the underside of the cover overhang and louvered slots are formed in the lower portion of the door. This creates a natural movement of air and has a cooling effect on the electrical equipment. The slots may be screened upon request. Southern offers fiberglass and aluminum filters. Rain tight intakes prevent water from being drawn into the enclosure. Fans, lights, heat exchangers, air conditioners and thermostats are also available. The standard finish is mill aluminum. Additional finishes available upon request. Southern Manufacturing matches Federal Standard 595B Paint Colors and RAL for powder coat selection.

To talk with a Southern representative please call us at 800-866-5699 or email us at
Southern Manufacturing.