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System uses modular elements. The spacer elements are modular and interlock at the sides and top to secure the ducts against separation during backfiling. Two modules are offered: a base spacer-flat at the bottom and an intermediate spacer. When the duct bank is capped with a spacer or a Cap-Lok (see accessories), the need for spacers as top caps is not necessary. The Cap-Lok is an easy and cost effective method for securing the top of the duct bank.

Assembly is a snap. Base and intermediate spacers interlock both vertically and horizontally; the interlocks plus wide base-plates provide solid support for duct bank.

Push together. As shown above, the suggested method is to snap spacers together with a vertical push..

Slide together. As shown at right, above, units will also slide together; this method is for use in unusual field conditions such as duct repair.

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Unit of Measure
1 2 

Part #

Item Name

Type

Pipe Diameter

Pipe Separation

Number of Assemblies Wide

161-2 N/A 3 x 3 x 2 Base Spacer N/A Multiple Base Spacer N/A 3 in N/A 3 in N/A 2
161-3 N/A 3 x 3 x 3 Base Spacer N/A Multiple Base Spacer N/A 3 in N/A 3 in N/A 3
161-4 N/A 3 x 3 x 4 Base Spacer N/A Multiple Base Spacer N/A 3 in N/A 3 in N/A 4
161-5 N/A 3 x 3 x 4 Base Spacer N/A Multiple Base Spacer N/A 3 in N/A 3 in N/A 4
163-2 N/A 6 x 3 x 2 Base Spacer N/A Multiple Base Spacer N/A 6 in N/A 3 in N/A 2
163-3 N/A 6 x 3 x 3 Base Spacer N/A Multiple Base Spacer N/A 6 in N/A 3 in N/A 3
163-4 N/A 6 x 3 x 4 Base Spacer N/A Multiple Base Spacer N/A 6 in N/A 3 in N/A 4
186-2 N/A 4 x 1 1/2 x 2 Base Spacer N/A Multiple Base Spacer N/A 4 in N/A 1 1/2 in N/A 2
186-3 N/A 4 x 1 1/2 x 3 Base Spacer N/A Multiple Base Spacer N/A 4 in N/A 1 1/2 in N/A 3
186-4 N/A 4 x 1 1/2 x 4 Base Spacer N/A Multiple Base Spacer N/A 4 in N/A 1 1/2 in N/A 4
186-5 N/A 4 x 1 1/2 x 5 Base Spacer N/A Multiple Base Spacer N/A 4 in N/A 1 1/2 in N/A 5
190-2 N/A 4 x 3 x 2 Base Spacer N/A Multiple Base Spacer N/A 4 in N/A 3 in N/A 2
190-3 N/A 4 X 3 X 3 Base Spacer N/A Multiple Base Spacer N/A 4 in N/A 3 in N/A 3
190-4 N/A 4 X 3 X 4 Base Spacer N/A Multiple Base Spacer N/A 4 in N/A 3 in N/A 4
190-5 N/A 4 x 3 x 5 Base Spacer N/A Multiple Base Spacer N/A 4 in N/A 3 in N/A 5
192-2 N/A 5 x 3 x 2 Base Spacer N/A Multiple Base Spacer N/A 5 in N/A 3 in N/A 2
192-3 N/A 5 x 3 x 3 Base Spacer N/A Multiple Base Spacer N/A 5 in N/A 3 in N/A 3
192-4 N/A 5 x 3 x 4 Base Spacer N/A Multiple Base Spacer N/A 5 in N/A 3 in N/A 4
192-5 N/A 5 x 3 x 5 Base Spacer N/A Multiple Base Spacer N/A 5 in N/A 3 in N/A 5
197-2 N/A 8 x 1 1/2 x 2 Base Spacer N/A Multiple Base Spacer N/A 8 in N/A 1 1/2 in N/A 2
199-3 N/A 8 x 2 x 3 Base Spacer N/A Multiple Base Spacer N/A 8 in N/A 2 in N/A 3
199-4 N/A 8 x 2 x 4 Base Spacer N/A Multiple Base Spacer N/A 8 in N/A 2 in N/A 4
Unit of Measure
1 2