Duct Spacers · Size 2 inch (50 mm)
2" Duct Spacers (50 mm)
A 2" duct spacer holds 2" (50 mm) conduit on a precise grid while a duct bank is assembled, poured, and backfilled — base spacers set the bottom row, intermediate spacers stack the rows above.
Innovative Plastics molds 2" duct spacers in both base and intermediate styles from high-impact polymer. The two halves interlock vertically and horizontally, so a 2" duct bank locks together as one rigid grid with no banding, tie wire, or field measuring between conduits.
The 2" size covers the smaller primary and secondary conduit common on electrical, broadband, and fiber duct banks, and is offered in three separations — 1.5", 2", and 3" — to match the gap called out on your drawings. Base and intermediate 2" spacers use the 40xx / 41xx part numbers below.
Need a different trade size? The same interlocking system runs from 2" through 8" on the full duct spacers family page. For step-by-step assembly, see installing conduit duct spacers and duct bank spacing.
Specifications
2 inch (50 mm) sizes & part numbers
Price: $1.05–$1.20 each, effective 2026-07-23. Minimum order one case; volume & distributor pricing available.
| Product image | Product Number | Trade Size (in) | Trade Size (mm) | Case Qty | Price (USD) | Order (cases) |
|---|---|---|---|---|---|---|
 | 4020-15 | 2.00 x 1.50 | 50 x 40 | 450 | $1.19 | |
 | 4020-20 | 2.00 x 2.00 | 50 x 50 | 325 | $1.18 | |
 | 4020-30 | 2.00 x 3.00 | 50 x 80 | 300 | $1.20 | |
| Product image | Product Number | Trade Size (in) | Trade Size (mm) | Case Qty | Price (USD) | Order (cases) |
|---|---|---|---|---|---|---|
 | 4120-15 | 2.00 x 1.50 | 50 x 40 | 500 | $1.07 | |
 | 4120-20 | 2.00 x 2.00 | 50 x 50 | 325 | $1.10 | |
 | 4120-30 | 2.00 x 3.00 | 50 x 80 | 275 | $1.05 | |
Made in Texas, USA · ships across the US. Looking for other sizes? See the full Base & Intermediate range.
FAQ
Frequently asked questions
- What separations does the 2" duct spacer come in?
- Three separations — 1.5" (40 mm), 2" (50 mm), and 3" (80 mm) — in both base (40xx) and intermediate (41xx) styles. Match the separation to the conduit gap on your project drawings.
- Do 2" duct spacers need banding?
- No. The two-piece design interlocks vertically and horizontally, so the bank stays aligned under worker weight and through the pour or backfill with no banding or tie wire required.
- Are base and intermediate 2" spacers sold separately?
- Yes. Base spacers sit on the trench floor as the bottom course; intermediate spacers stack above them. Order the mix your bank height needs — both ship by the case.
Full product family
This page covers the 2 inch (50 mm) size. See every size, spec, and part number on the Base & Intermediate page or browse the full Duct Spacers range.
Guides & resources
- Conduit Duct Bank Spacing: Intervals, Separation, and Cover How to space conduit in a duct bank — spacer intervals along the run, separation between conduits, and concrete cover for encased and direct-burial installations.
- How to Install Conduit Duct Spacers A step-by-step guide to assembling base and intermediate conduit duct spacers into an aligned duct bank for encased or direct-burial installation — no banding required.