Illinois Society of Architects · Chicago · leaf 602
Bright Repeatedly choosinqDOUBLE-DUTY AIR F I LT E R S <^* 288 NORTH … Rarely does a leader in industry misjudge twice. That iswhy we offer this outstanding partial roster of the DOUBLE-DUTY air filter as a testimonial verification of the claimsmade for this automatic, self-cleaning and non-clogging unit.An initial or trial installation has been the forerunner in…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
