1 1/2” hardware install on 1 1/4” doors

[Beth.askinc]

Need help! Replacing all the hideous, worn out interior door knobs and hinges in matte black. Working on the farmhouse again. We encountered two original doors that are only 1 1/4 thick. All new hardware is made for 1 1/2” or thicker doors. Is there what I would call a giant washer type thing that we can put between the hardware and the door to fill the 1/4 gap? What do you call it? Where can we find it? TIA

 

[Snoonyb]

Welcome.
They are titled lock backing plates, and are available in many finishes, so, ask at your lock mfg. web site cust. svc., to insure a color match.

https://www.homedepot.com/p/Prime-Line-3-1-2-in-Chrome-plated-Back-Plate-U-9517/100163122

 

[havasu]

Mobile home door hardware is also designed for those thinner doors.

 

[Beth.askinc]

Welcome.
They are titled lock backing plates, and are available in many finishes, so, ask at your lock mfg. web site cust. svc., to insure a color match.

https://www.homedepot.com/p/Prime-Line-3-1-2-in-Chrome-plated-Back-Plate-U-9517/100163122

Thanks for pointing me in the right direction. Beth