RV and RC panel radiators are manufactured in the USA from cold-rolled steel and mounted vertically. The panels are finished in a gloss powder coat and available in many standard colors and over 100 optional colors. RV and RC panels are made in heights from 20″ to 29′-6″ and widths from 3” to 70”. Standard piping connections are 1/2″ NPT for inlet and outlet piping, and 1/8″ NPT for vents (3/4″ NPT inlets and outlets are available by special order).