Clip Top Hinge Model All Blum Clip Top type hinges require that the cup drilled in the back of your door is at least 13mm (1/2" deep). Prior Blum Clip top hinges required a 12.5mm cup depth. We recommend that you measure the cup depth on your doors before ordering. Many cabinet makers used a 13mm cup depth even though the requirement was only 12.5mm so yours may actually already be drilled to 13mm. If your cup depth measures only 12.5, purchase this hinge cup spacer plate which you can install under the hinge cup to make up for the 0.5 mm difference. This spacer plate works for both standard Clip Top Blum hinges and Clip Top Blumotion hinges. Does not work for Blum's Compact hinges. Note: This spacer plate is actually 1.5mm thick and will make up a difference of up to 1.5mm. Blumotion Compact Hinge Model Spacer plate for Blum's Compact Blumotion hinges. For use under the hinge cup for thin or profile doors. Does not work on Blum's standard hinges. This spacer plate is about 1/16" in thickness. Blum's Compact Blumotion hinges are available in two cup depth models: 7/16" or 1/2". Examples of use: If your door is drilled for a 7/16" cup depth, this spacer would allow you to use a hinge with a 1/2" cup depth. If your door has a beveled edge or a profile that only allows you to drill a 3/8" cup depth, you could use this spacer and a shallow model (7/16" cup depth) Compact Blumotion hinge.