This 3 pack of Microfiber Replacement Mop Pads fit the Real Clean, Simplee Clean or other Flat Mop Frames with Velcro attachment. This mop wet pad can be compared to rubbermaid style microfiber wet pads. This microfiber mop pad fits the 18" flat frame and is for the Damp or Wet applications. The pad has a little overhang around the aluminum flat frame so the aluminum won't touch your floor. Just Velcro the Microfiber Pad on to the bottom of your Industrial Microfiber Mop Hardware and you are ready to clean. After the pad(s) becomes soiled just place them into your washing machine or rinse under the faucet or in a bucket. These Microfiber mop pads measure a total of 20" in length which fits all 18" frames and hardware. It's required to have 1" of overhang for each side of the 18" mop frame hardware to ensure your pads don't scrape your baseboards and floors while mopping.