It’s large. Good for standard rectangular digital thermostat.
Its so easy to install and it only took me 15 minutes with the right tools on hand.
I brought this last week installed in less than 10 minutes . Help unwanted people touching your thermostat!
Depth 3" Lengh11" Width 9.5"
fits max 6 x 5 inch thermostat overall 7.5 x 6.5 inches
They are all keyed the same. The lock is for deterrence, not security.
It mounts OVER the thermostat. No need to remove t-stat to install it !!
6” wide x 5” tall x 4” deep.