Vertical Lok interlocking spacers provide uniform separation between the rows and columns of duct and conduit and when assembled together, create a stable structure for the concrete. Vertical Lok Spacers connect quickly and easily by sliding together horizontally and snapping together vertically and provide true customization for any configuration of duct bank. Superior features like the molded rebar slots for efficient drop-in installation of full length rebar and integral holes in base spacers for securing in place save time and effort.