Installation instructions are NOT included with this part! This offering is for a 250 page rear paper guide. This part goes into the paper cassette. This offering is for the paper guide as noted in the picture. This guide fits into the 250 page paper cassette tray for the following Brother devices: DCP8112DN, DCP-8112DN, MFC7360N, MFC-7360N This item is NEW and a TRUE Brother part! Dont see your model number listed above? Send us a message as we are happy to help!