We supply electrical pull boxes and handholes for applications and installations in electrical utility, telecommunications, construction, transportation, and water utility industries. We carry an array of underground pull box sizes and specifications, including Quazite boxes made from pre-cast polymer concrete. Our pull boxes perform to make your underground electrical and telecommunications project safe and easy.
Browse our variety of underground junction boxes for your electrical and cable applications. You can request a quote through our website or contact us for pricing.
Polymer Concrete Pull Boxes
Polymer concrete is made from a polymer resin system and selectively-graded aggregates, then reinforced with fiberglass for excellent strength and rigidity. An extremely powerful cross-linked bond is formed when the resin and aggregates are combined through a process of mixing, molding and curing.
Benefits of Polymer Concrete vs. Traditional Concrete:
- Installation Cost: lower because no special equipment is required, making it easier to handle
- Cost: lower lifetime costs as polymer concrete materials have a longer service life
- Strength: 3 – 5 times higher tensile & flexural strength
- Weight: 1/10 to 1/3 lighter than traditional concrete
- Weather Resistance: can withstand freezing and thawing
- Corrosion Resistance: alkaline & deterioration resistant
- Impact Resistance: meets ASTM D-2444
- Water Absorption: less than 1% per ASTM D-570
- Non-conductive: boxes & covers do not require grounding, and is not flammable
Frequently Asked Questions
How do I know what size of underground utility box I need?
Determining the size of underground pull and junction boxes to meet NEC 314.16 code standards is required to prevent damage to conductor insulation. Luckily, we have a resource article that deals with the specifics. You can read it here
. And you can always call and talk to one of our friendly, knowledgeable staff if you have questions.
What materials are your pull boxes made of?
We have 2 types of pull boxes:
Made from a combination of sand, aggregates and polymer bonding resin. Precast polymer concrete boxes are reinforced with fiberglass for added strength. They are lighter weight than concrete boxes, have excellent strength, resistance to freeze and thaw, impact resistance, and corrosion resistance. They are non-conductive, so no grounding is required for the box or cover.
- Polymer Concrete/Fiberglass Combination
Some of our underground splice boxes have a polymer concrete cover and supporting ring molded to a fiberglass body. This reduces weight, while supporting incidental traffic.
How do I know what tier rating of pull box I need?
ANSI 77 sets forth 6 types of traffic for load ratings. Please see our resource article here
for detailed information. And you can always call and talk to one of our friendly, knowledgeable staff if you have questions.
Are Underground Pull Boxes the Same as “Handholes”?
There are many terms used to describe an underground pull box. Handhole, access box, underground utility box, junction box, underground enclosure, and splice box are all terms used interchangeably for a pull box.
Why do I need to get a quote to see pricing?
Pull box prices can fluctuate due to raw materials cost and manufacturer pricing. Supply, demand and even transportation costs can also cause price fluctuations. Chapman Electric Supply wants to get you the best pricing possible, so we quote each project.
What kinds of Projects Use Pull Boxes?
Underground pull boxes are used when pulling, splicing, accessing, and storing cable, as well as providing a safe, durable and cost effective housing for system equipment. They can be used in electrical utilities, telecommunications, C&I, water, DOT, CATV, commercial, and industrial projects.
Where can I find more information about ANSI/SCTE Standards?
There is a great resource from the Society of Casble Telecommunications Engineers here
Are Pull Boxes “Stackable”?
Depending on the unit, some underground boxes are stackable. We also carry pull box extensions
for other models. Please give us a call if you have any questions about stacking.
What is the Benefit of a Straight Wall Enclosure vs. a Flared Wall Enclosure?
Straight wall boxes allow for less excavation. Flared wall boxes provide additional work space.