Carlon Snap-N-Stac Combo Duct Spacers from Thomas & Betts (Memphis, TN) combine the traditional two-piece base and intermediate spacer systems into a single, one-piece unit, simplifying underground duct base installation and reducing installation time in concrete-encased applications. The duct spacers also feature a horizontal locking system and an exclusive vertical locking system that enable the product to be used as either a base or intermediate spacer. Available in one-way, two-way and three-way configurations, the spacers can be installed horizontally, vertically or turned upright for unique duct bank configurations. Spacers will interlock horizontally, regardless of size.
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