the hvac guy does not know how drywall is made and would struggle to produce a piece od drywall. As a matter of fact, the drywall guy would struggle. They don’t

the hvac guy does not know how drywall is made and would struggle to produce a piece od drywall. As a matter of fact, the drywall guy would struggle. They don’t build their own materials, they use materials they buy from Home Depot.