These unassembled cell bars are specially designed for the Nicot queen rearing system . The two galvanized strips are punched with 13 holes each into which the cell bar holders fit tightly. When the cells are finished they may be popped off and moved to re-queen a colony or to a mating nuc. Cell protector cages are shown but are not included and must be ordered separately. Frames are 9 1/8" tall.