Ultraloq U-Bolt Series fit the standard doors with a borehole of 2-1/8" (54 mm) diameter. If your door is not prepped with a borehole, you can use the template included in the box as a guide to drill the hole as well.

U-Bolt

U-Bolt Pro

U-Bolt WiFi

U-Bolt Pro WiFi

U-Bolt Z-Wave

U-Bolt Pro Z-Wave

Installation Tips for Ultraloq U-Bolt Series:

Note: ANY WRONG STEP WILL LEAD TO THE WHOLE INSTALLATION ALL FAILED.

• Make sure the cylinder tailpiece is adaptive for the thickness of the door. After installing the cover plate, 2 pieces over the Assembly Mounting Plate hole is best. More than 3 pieces, the lock will have the Jamming, and the motor is working overload.

• Please DON'T insert the mechanical key during the whole installation.
• Keep the Bolt shrink and the cylinder tailpiece horizontal.​

• Keep the knob of the U-Bolt in the Unlock position.