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unit heaters catalog (1950's)

Out-of-print, hard-to-find 8 1/2" x 11" paper catalog, 8 pages from the Dravo Corporation, Heating Department, Pittsburgh PA.   Catalog is undated but taken from a publication issued in 1950's.

Asbestos Reference:

Dravo promoted the use of 10" transite vent stacks with their Counterflo Heater. See photos for further reading and info!!!

Book Condition:
The catalog is in VERY GOOD condition!!  The pages have some browning due to age.   It's still a usable booklet with plenty of life left in it!! 

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