These are an alternative to the metal wall brackets for Baseboarders brand or similar baseboard heater covers.
This bracket is for installing baseboard heat covers for hydronic heating only. Not for electric heaters, as the temperatures are higher. It is an alternative to the pricey metal ones sold by Baseboarders brand or similar. It is over-engineered for strength, in case your little one decides to use the cover as a step. Ask me how I know :)
This must be printed in either ABS or ASA for strength, flexibility and temperature resistance. Typically, hydronic heating has a temperature of 85C, so the material must be able to withstand this. The glass transition temperate for ABS/ASA is around 95C and is the best material for this application. DO NOT USE PLA OR PETG!