Werner Shoe Kit 26-2 Extension Ladder Parts Replacement Feet for the Following Series Aluminum Ladders: D1200-2 all sizes (MK15-21) This is a Type II 225lb rated ladder. D1300-2 all sizes (MK7-12) This is a Type I 250lb rated ladder. D1700 & D1800 Equalizer series ladders Not for use on any other series