Model T35 axle circulating air blower
2.8	4	5.6	8	11.2
3.15	4.5	6.3	9
3.55	5	7.1	10

Model 9-19 high-pressure centrifugal ventilator
4A	5.6A	8D	11.2D	16D
4.5A	6.3A	9D	12.5D
5A	7.1D	10D	14D

C6-48 dust discharging centrifugal ventilator
3.15C	6.3C	12.5C
4C	8C
5C	10C

Model 4-72 general glass fibre centrifugal ventilator
2.8A	4A	6A	12C	10D
3.2A	4.5A	8C	6D	12D
3.6A	5A	10C	8D

Model T40I axle circulating air blower
		5	7	9
3	4	6	8	10

Model 9-26 high-pressure centrifugal ventilator
4A	5.6A	8D	11.2D	16D
4.5A	6.3A	9D	12.5D
5A	7.1D	10D	14D