Measure the backset on a Hoppe multipoint lock or door: with a tape measure, capture the distance from the front of the lock box (or door edge) to the center of the spindle/hardware hole. Common Hoppe backsets are 1-3/8, 1-3/4, 2-3/8, and 2-3/4 inches; storm doors and astragals are measured the same way.

Step-by-Step Instructions

1. Understand What the Backset Is

• The backset is the distance from the edge of the door to the center of the handle (or the center of the hardware hole where the handle would mount).
• Common backset measurements for Hoppe multipoint locks are 1-3/8, 1-3/4, 2-3/8, and 2-3/4 inches.
• You only need a tape measure to find it.

2. Measure a Lock With a Visible Lock Box

• Place the tape measure on the front of the lock box (the face plate on the edge of the door).
• Measure straight across to the center of the spindle — the square hole in the gearbox where the handle goes.
• That distance is your backset.

3. Measure When the Hardware Hole Is Not Visible

• If the gearbox does not show an open hardware hole, measure from the edge of the door to where the hardware hole would be on the face of the door.
• A common result here is 2-3/8 inches.
• For a patio door with an extruded astragal, measure the backset the same way as the opposite door — from the face plate to the center of the hardware hole.

4. Measure a Lock With a Cylinder

• For locks that use a key cylinder, measure from the edge of the door to the center of the hardware hole or lock cylinder.
• A typical reading on this style is 2 inches.

5. Measure a Storm Door or Door Without a Mechanism

• On a storm door with a lip on the edge, measure from where the door edge would be if the lip were not there, straight across to the center of the hardware hole — often 7/8 of an inch.
• On a door with no mechanism installed, measure from the edge of the door to the center of the mechanism hole — commonly 2-3/4 inches.
• Write the measurement down and use it when ordering a replacement multipoint lock.

Need Replacement Parts?

Browse the parts and hardware related to this guide:

Hoppe Multipoint Lock Hardware

Need help identifying which multipoint lock you have? Try our Multipoint Lock Identifier and our team will match you to the exact replacement.

Not sure exactly what you need? Use our Part Identifier form and a real human expert will help you pin it down.

Have questions or need a hand? Contact our team — we’re happy to help you find what you need.

If you have any questions or need help identifying the correct part, feel free to reach out or leave a comment. We’re here to help! Visit AllAboutDoors.com for everything door & window related.