Wall Heater Spacer for 300W Heater Panels

Recommend PETG to handle the heat but PLA should be OK as well as low wattage heaters run well below PLAs melting point. The spacing is important so that airflow between the wall and the heater is established to ensure convection flow to keep the room warm.

The spacers are open on one side to accommodate screws being mounted first and then pushing the spacer over the threaded screw.