|_##HVAC_DUCT_SIZE##MILLIMETERS|_##HVAC_DUCT_SIZE##MILLIMETERS
FFKV 30-15|300|150
FFKV 40-20|400|200
FFKV 50-25|500|250
FFKV 50-30|500|300
FFKV 60-30|600|300
FFKV 60-35|600|350
FFKV 70-40|700|400
FFKV 80-50|800|500
FFKV 90-50|900|500
FFKV 100-50|1000|500

