Solutions / Duct Bank Spacers
Custom HDPE Duct Bank Spacers
Custom CNC-cut HDPE duct bank spacers for underground electrical, telecom, and data center banks. Each board is made to your duct-bank detail in Greenville, SC: thickness, rows and columns, hole sizes, center-to-center spacing, and flow, rebar, or ground holes.
Request a QuoteCustom HDPE duct bank spacers, cut to the job
These boards are flat HDPE sheet, CNC-routed from your drawings and conduit schedules. Hole size, rows, columns, and center-to-center spacing follow the schedule. Typical thickness is 3/8 in or 1/2 in. Send the duct-bank detail, or list conduit sizes, spacing, flow, rebar, and ground holes, and how many boards you need.
The boards stay in the bank and are encased in concrete with the conduits. Crews often place a spacer every 4–7 ft, prefabricate the array on the surface, and lower it into the trench before the pour.
Data center duct bank spacers · Custom plastic parts for data centers
Applications
- Underground electrical, telecom, and utility banks
- Concrete-encased duct banks
- Data center and UPS service banks
- Prefabricated conduit arrays
- Mixed conduit sizes on one board
Why custom CNC spacers
Less assembly time
Hole centers are already in the sheet, so crews lock conduits into a finished grid instead of building spacing piece by piece in the excavation. We do not publish a labor-savings percentage.
Fit to the engineered layout
Thickness, rows, columns, hole sizes, and center-to-center spacing are cut from the drawing, including mixed conduit sizes and flow, rebar, or ground holes when the print calls for them.
Less time in the trench
Crews can prefabricate the conduit array on the surface and lower it into the excavation. More of the layout work happens before the pour, outside the trench.
Repeating accuracy
The same programmed array repeats along the bank, typically every 4–7 ft, so conduit sizes and spacing stay consistent from board to board. Boards ship from Greenville, SC to the jobsite.
Spec options
Cut from your drawing, conduit schedule, or duct-bank detail.
HDPE sheet
HDPE
We CNC-route HDPE sheet. Ask which virgin or reprocessed grade fits the thickness on your print.
Non-conductive
HDPE sheet does not carry current, which is why it is used between conduits in a concrete bank.
Chemical resistance
HDPE resists many chemicals encountered in underground electrical work.
Why Choose Blue Ridge Thermoforming?
- In-house 5-axis CNC routing at the Greenville plant
- 184 Commerce Center, Greenville, SC 29615
- Quality system certified to ISO 9001:2015
- Just-in-time shipping and offsite warehousing when the job needs boards staged

Duct Bank Spacer FAQs
What should I send for a quote?
Send the drawing or conduit schedule: conduit sizes, rows and columns, center-to-center spacing, thickness preference, and whether you need flow, rebar, or ground-wire holes. Quantities by board type and jobsite or warehouse staging help too. Use the quote form on this site.
Can one board mix conduit sizes?
Yes. Hole diameter follows the conduit OD on the schedule, including mixed sizes on one board.
How far apart along the run?
Spacing along the run is typically every 4–7 ft. Confirm the interval on your drawing.
Virgin or reprocessed HDPE?
We CNC-route HDPE sheet. Ask which virgin or reprocessed grade fits the thickness on your print.
What thicknesses do you cut?
Typical boards are 3/8 in and 1/2 in HDPE sheet. Ask us if the drawing calls for another thickness.
Are these molded catalog chairs?
We CNC-cut custom HDPE sheet arrays from your drawings and conduit schedules. Hole size, rows, columns, and center-to-center spacing follow the print. Interlocking molded catalog chairs, including Snap-Loc-style bases, are a different product with a fixed grid.
Are these thermoformed?
No. Duct bank and conduit spacers are CNC-routed HDPE sheet with holes. They are not thermoformed.
Where are the boards routed?
Routing is in-house in Greenville, South Carolina. We ship from Greenville to jobsites across the Southeast, including South Carolina, North Carolina, Georgia, Tennessee, and Virginia. The same CNC HDPE spacers serve data center banks and other underground electrical banks (power, telecom, mixed).
Let's Build Something That Performs
Send the drawing or conduit schedule. We CNC-route the sheet in Greenville, SC and can ship the boards to the jobsite.