PLAN OF BOILER AND ENGINE ROOMS ALSO OF FAN ROOM, AIR CHAMBERS, HEATING COILS, DUCTS, PIPING, ETC.;THROAT AND REGISTER OF HOT AIR OUTLET TO BE CONSTRUCTED...THEY SHALL BE WELL SECURED TO PLACE...ORNAMENTAL PLASTIC CORBEL...FOUL AIR REGISTERS...HOT AIR REGISTERS...SHEET METAL TO BE FURNISHED BY HEATING CONTRACTOR WHO WILL ALSO SET REGISTERS; ...