I can't figure out how to open the cover to replace the batteries on my thermostat (vertical heat-only thermostat)

February 2021 1 28 Report

I can't figure out how to open the cover to replace the batteries on my thermostat (vertical heat-only thermostat)

We're having record low sub-zero weather and need to get the batteries changed in our thermostat ASAP. The furnace wasn't working right this a.m.