I HAVE 21 BOLT IN SHELF DIVIDERS FOR WORK VAN/TRUCK SHELF SYSTEM. THESE ARE FOR 17" SHELFS AND ARE 4" IN HEIGHT. I HAVE THEM DIVIDED INTO TWO GROUPS ONE OF 10 UNITS AND ONE OF 11. DOING MORE CLEANING UP ANED CAME ACROSS 5 MORE SHELF DIVIDERS THESE ARE LARGER THEY MEASURE 15 3/4" BYE 7" ( ASKING $3.00 FOR THE LARGER UNITS) ASKING $2.00 FOR EACH DIVIDER OR $30.00 FOR ALL OF THE SMALLER. IF INTERESTED CALL OR TEXT ROY AT 385-259-9933