Adams Rite 4920AN-55-000-335 Heavy Duty Deadlatch (ANSI Size) with Flat Faceplate in Black Anodized
- Black Anodized Finish
- LH or RHR - handed operation is easily reversible using only a screwdriver
- Cylinder Backset: 2-3/4"
- Case is made of steel with corrosion-resistant plating that measures 7/8" x 5-13/16" x depth (depth varies by bracket)
- 1-3/4" minimum door thickness required

The 4920AN-55-000-335 from Adams Rite is a Heavy Duty Deadlatch (ANSI Size) with Flat Faceplate in Black Anodized. The 4920AN-55-000-335 series Deadlatch offers precise traffic control and easy installation for wood or hollow metal doors prepared for hardware according to the specifications of the American National Standards Institute (ANSI). A key-controlled bolt hold-back feature allows a door to free-swing part of the day and exit-only when the bolt is free to latch. This allows a "locked" entrance to be used as an exit by customers or visitors already in the building. For its operation turn key or operate handle to retract spring-loaded latchbolt. To hold bolt retracted, push it in and secure by reverse turn of key. It is easily interchangeable, without stile modification with any MS1850A or MS1850S Deadlock of same backset and faceplate shape. It also replaces 4520 and 4720 ANSI Deadlatches.
Features
- Black Anodized Finish: Provides durability and a sleek aesthetic suitable for various door styles.
- LH or RHR Handed Operation: Easily reversible operation allows for flexible installation to suit any door configuration.
- Cylinder Backset: 2-3/4" backset minimizes the risk of improper fitting during installation.
- Durable Steel Case: Corrosion-resistant plating and robust construction ensure longevity in high-traffic environments.
- Minimum Door Thickness: Requires 1-3/4" minimum thickness to accommodate a variety of door types.
- Grade 1 Standard: Meets high-security specifications, ensuring reliable performance.
- Standard Mortise Cylinder Usage: Compatible with any standard 1-5/32" mortise cylinder with MS dimensioned cam for easy integration.
- Adjustable Armored Flat Faceplate: Measures 1-1/4" x 8" and allows for field adjustment for right or left beveled edge doors.
- Brass Latchbolt: Solid brass construction with a throw of 5/8" x 1" x 5/8" ensures secure locking.
- Stainless Steel Auxiliary Latchpin: Enhances security by preventing unauthorized entry using common tools.
- Less Strike Included: Simplifies installation by providing necessary components tailored for this Deadlatch.
- ANSI Preparation Strike: The 4506-02 Strike meets ANSI preparation specifications ensuring compatibility with existing door frames.
Adams Rite 4920AN-55-000-335 Specifications
| Finish | Black Anodized |
| Operation | LH or RHR reversible |
| Cylinder Backset | 2-3/4" |
| Case Material | Steel with corrosion-resistant plating |
| Case Dimensions | 7/8" x 5-13/16" (depth varies by bracket) |
| Minimum Door Thickness | 1-3/4" |
| Standard | Grade 1 |
| Compatibility | Standard 1-5/32" mortise cylinder with MS dimensioned cam |
| Faceplate Dimensions | 1-1/4" x 8", adjustable for beveled edge doors |
| Latchbolt Material | Solid brass |
| Latchbolt Throw | 5/8" x 1" x 5/8" |
| Auxiliary Latchpin Material | Stainless steel |
| Strike Included | Less Strike included |
| Strike Model | 4506-02 Strike for ANSI preparation |
Tools & Calculators


