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