We stock the Ives FS544 and FS555 Kick Down Door Holder Rubber Shoes. There are three versions of the rubber shoe that have been used over the years. In the 1980’s they used the Kick Down Door Holder Rubber Shoe FSPART.1053. The FSPART.1053 is known as our part number GJB. In the 1990’s to early 2000’s they used the Kick Down Door Holder Rubber Shoe FSPART.1052 which had threads molded on it. The FSPART.1052 is known as our part # GJA. In the mid 2000’s they used the Kick Down Door Holder Rubber Shoe FSPART.1063. The FSPART.1063 is known as our part # GJ1154. The FSPART.1063 uses a 8-32 screw to hold the rubber shoe in place. Before Glynn-Johnson merged with Ives these door stops were known as the GJL444, 4″ door holder, and the GJL555, 5″ door holder. If you have any questions on replacement rubber shoes, call, or email our door stop experts!