| 165 / | HD | HEAT EXCHANGE |
| DIG 92 | DD | WITH VALVE OR MOVABLE DEFLECTOR FOR HEAT EXCHANGE FLUID FLOW {6} |
| DIG 93 | DD | .~ Adjustable radiator face covering means (e.g., adjustable shield for car radiator, heater core, etc.) {3} |
| DIG 96 | | .~.~ Pivotal movement of adjustable cover {1} |
| DIG 97 | DD | .~.~.~> Plural parallel pivotable shutters {2} |