Fire Alarm Mount for Lack Enclosure

I created this recessed mount for a fire alarm to install in a Lack enclosure. It was made in Tinkercad. I purchased the fire alarm from Walmart.

Items and hardware used.
Fire Alarm (model: Fire Sentry i9040)
2 x M3x8mm
2 x M3 nut

Print Files:
Recessed Mount
Hole Cut out template

Print instructions

Printed with 5% infill