Propane wall heater for shop barn etc.

The listing

Kozy-World propane wall heater. Model KWP318 14,000-28,000 BTU. Mounts to wall. Good for barn, shop, shed, garage, greenhouse etc. Ventless, so should be used somewhere with good airflow so it does not burn up all your breathing air. It has a safety that will shut off before that happens, but still better to not use in a “tight” space that does not have adequate air exchange.