Genuine Joe Dust Mop Refill, 36", Use With 02309 Frame - Absorbent, natural cotton, yarn mop refill is designed for dusting efficiency. Dust mopping daily requires minimal effort. 36" mop refill is large enough to handle aisles and warehouses and maneuvers easily under and around desks. Use mophead with 36" Genuine Joe Frame. Mophead is made with a high percentage of recycled material.