Plastic Boxes, Handholes and Vaults 

Our CARSON® line of plastic enclosures are the broadest and most complete line offered in the industry. From the 6" round up through the 3' x 5' x 5' vault, we have the right size enclosure for your needs. With 40 years experience and nationwide distribution to serve you, we provide the product of choice. Carson brand enclosures are specified and preferred by industry professionals.

CATALOG Dry Utilities Polymer & Plastic (17.5 MB)   BROCHURE Cable Enclosure Solutions (4.73 MB)   H Series Polymer Boxes    Our H-SERIES™ Polymer Concrete has exceptional strength and rigidity along with being lightweight. Our polymer concrete is a blend of graded aggregates with a proprietary mix of the finest polymer resins and chopped fiberglass for increased reinforcement. Sizes range from 11"x11" to 36"x 60" with up to ASHTO H-20 performance rating.   CATALOG Dry Utilities Polymer & Plastic (17.5 MB)   BROCHURE Underground Utility Products (2.8 MB)      Uses: Communications Electric utility Traffic Concrete Boxes  Our CHRISTY® concrete pull box products provide reliable, cost-effective solutions for the in-ground construction of utilities. For over 40 years, the Christy brand utility box has been the proven concrete underground enclosure for municipalities and cities throughout the United States. Our boxes are manufactured to the highest industry standards, at manufacturing plants quality certified by the National Precast Concrete Association. The exclusive Hardhat Plastic Cap™ feature is molded into the concrete box during the manufacturing process, creating a durable, dimensionally consistent, and aesthetically superior top surface suitable for parkway, sidewalk, and greenbelt applications.   CATALOG Concrete Products (9.49 MB)  BROCHURE Underground Utility Products (5.3 MB) R Series Enclosures  Uses: Utility equipment protection 

Uses: Utility hand access enclosure

DUO MOLD® Polymer Concrete Boxes 

Our SYNERTECH® brand of DUO MOLD® polymer boxes combine the exceptional strength and durability of High Density Polymer Concrete with the tough and lightweight qualities of Sheet Molding Compound to create exceptional equipment enclosures. Combining the two patented materials with a patented manufacturing process, our SYNERTECH® products represent the toughest and lightest underground enclosures on the market today. Sizes range from 11x18x12 to 36x60x72 with SCTE Tier 15 performance load rating.

CATALOG Dry Utilities Polymer & Plastic (17.5 MB) Synertech BROCHURE Underground Utility Products (5.3 MB)

Uses: Electric utility Telephone



Synertech boxes have been installed by Kodiak Electric,  the Matanuska-Susitna Borough School District.

Sheet molded compounds allow for our boxes to be rated at 20,000 lbs and be 1/8" thick!

Less weight=Less cost 

in shipping & labor.

No more backhoes,

No more chains.

20-30% cost savings compared

to standard polymer concrete.

Now available from our Portland DC

   10-14 Business DAYS TO YOUR DOOR! 

FIBRELYTE® Composite Boxes    FIBRELYTE ®'s exclusive formulation of polyester resin, fiberglass and calcium carbonate yields lightweight, high strength products. This proprietary composite material is stronger, easier to handle and much lighter than concrete, saving both time and money during installation, service work and transportation. Sizes include 9" round up to 17"x 30" with up to a SCTE Tier 8 performance rating. CATALOG Dry Utilities Polymer & Plastic (17.5 MB)   BROCHURE Underground Utility Products (2.8 MB) Uses: Communications Electric utility Drainage Traffic 



Enclosures 

Product Specifications 

Carson HEAVY WALL Specifications

Christy Box Plastic Cap Quick Specification