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Replace Lock Mechanisms on 400 Series Frenchwood® Hinged Patio Doors

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Replace Lock Mechanisms on 400 Series Frenchwood® Hinged Patio Doors
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Hinged patio doors are offered in a variety of sizes and configurations like single-opening and double-opening patio doors.

  • Single-opening patio doors have one (1) active panel that opens and closes. These units can also include a stationary panel that does not open.
  • Double-opening patio doors have an active panel and a passive panel. The active patio door panel opens first, while the passive patio door panel opens second.

Install a Lock Mechanism on Andersen® 400 Series Frenchwood® Hinged Inswing and Outswing Patio Doors

This article provides you with resources for ordering and replacing a lock mechanism on Andersen® 400 Series hinged inswing and outswing patio doors can be done by following the steps outlined below.

Let's Get Started

1. Order Replacement Parts

  1. Look at your door, and determine if you have a single- or double-opening patio door.
  2. Using the information below, determine if you need to replace the lock on your active or passive door.

 

Single-Opening Patio Doors

Single-opening patio doors only use an active lock mechanism on the operating, or active, panel. If your unit has a stationary door panel, it does not have a separate lock mechanism.

  • Single-opening patio doors have a multi-point active lock mechanism. These lock mechanisms are universally handed.

 

Double-Opening Patio Doors

Double-opening patio doors have two different locks. The active panel uses the same multi-point active lock mechanism as a single-opening door, and the passive panel uses a passive lock mechanism.

 

Note: Andersen® 400 Series Frenchwood® hinged inswing and outswing patio doors manufactured from 1993 to 2003 use a different passive locks. When you visit the parts store, you'll see the options for this vintage.

Active lock mechanism with close‑up callouts showing the locking point locations along the door edge.

Active Lock Mechanism

Hinged patio door panel with callouts highlighting the passive lock mechanism locations at the top, center, and bottom of the door edge.

Passive Lock Mechanism

 

  1. Lock mechanisms are sized for specific patio doors. To measure the door's dimensions and determine the correct lock size, see Determine the Size of Your Andersen® Window or Patio Door for more information.
  2. Once you have determined which lock mechanism you need and patio door size, you can order the replacement 400 Series active or passive lock mechanism Opens in a New Browser Tab from the Andersen Parts Store.

 

2. Install Parts

To install a replacement lock mechanism, see the instructions provided in the installation guides or YouTube® video below.

 

Replacing the Lock Mechanism on Frenchwood Hinged Inswing/Outswing Patio Doors

Related Articles

Depending on which direction your patio door opens, you might have to change the handing of the lock mechanism. See Change Lock's Handing on Andersen® Hinged Patio Door for next steps.

 

©2026 Andersen Corporation. All rights reserved.

 
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