PEX Tubing may be used as a supply line to baseboard heat. In this application Oxygen barrier PEX Tubing (the tubing commonly used for Radiant Heat) should be used. There are baseboard elbows and baseboard tees, specifically designed for this application. 3/4" PEX Tubing is the most popular size for this application.
This blog is sponsored by www.supplyhouse.com the leader in PEX Tubing for Baseboard Heat.