Part Number 855

Single Point GU Gear Box Hardware*  Schlosskasten Security / Schlossk. Sec.

*Single point gear box  is not interchangeable with multi point gear box system interior components are different.

For Swinging Patio Doors

Depending on vintage your sticker label color can be orange or white with the following numbers: 

• Orange Label: 
• 6-29377-45-0-1 A 
• 45-92-8 or 45-92-8 EINST.
• White Label: 
• 6-29377-45-0-1 B
•  Scholssk.Sec.U 45/92/8

Handing: Strike is reversible for both left hand and right hand doors. See video on how to reverse the latch 

Brands known to been used on: GU, Hurd, Sierra Pacific and More.

Install Instructions:

1. Remove set screws on handle levers and remove
2. Remove mounting screws on faceplate estuation of the handle set
3. On side of door remove screw that lines up with the lock cylinder.
4. Remove the handle set
5. Remove all screws down the side of the door that holds on the gear box (keep all screws you will reuse them)
6. Install new multipoint with screws
7. Test for Operation 
8. Reinstall handle set
9. Test for proper operation

*Single point gear box  is not interchangeable with multi point gear box system interior components are different.

updated 7/18/23