1. The air intake must be placed on the same side of the building as the exhaust to balance wind pressure effects. 2. The intake terminal must beat least 1 ft above maximum local snow level. An outside air intake riser is permitted provided a downturned intake terminal is used (Fig. 1). 3. The intake and exhaust terminals must beat least 4 ft apart when using the Aerocowl exhaust termination. This minimum distance can be reduced to 2 ft when the intake terminal is at least 1 ft below the exhaust terminal.