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Help identifying steam convector

Mark_35 Member Posts: 44
Trying to find tune my EDR calculations for new boiler. Can anyone identify these beauties (see pix). The house is 1935, has two-pipe vapor system with Trane B-1 traps and Trane Return trap over old boiler. These convectors are recessed in the wall. Some are two pipe with 3-1/2" wide by 2" deep fins and some are three pipe 5-1/4" x 2" fins. They have copper tubes and looks like copper fins. They have cast iron headers with no vent on top. They are mostly 24" high.

They have an adjustable damper which is shown.

Anyone have any old catalogues or tables on these babies.
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