Old Hydrotherm RTS-20B Relay Transformer Box: Source For ?

[Robert11]

Hello,

Anyone know of a source for a quite old home furnace relay box:

Was from Hydrotherm (but probably a Honeywell) and labeled:

RTS-20B. Relay Transformer

I can jigger something up from the present Honeywell line of similar ones, but would be nice to find an exact replacement that already has the MANUAL - AUTO switch on the top.

Thanks, B.

[Clare Snyder]

AcmeControls handles rebuilts for abouit $175.