From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Data table for Burgess Industrial Air Cleaners showing dimensions and airflow restriction values.
| Identifier | ExFiles\Box 152\3\ scan0187 | |
| Date | 2nd April 1936 | |
| LONDON OFFICE Burgess Industrial Air Cleaner -2 APR 1936 Dimensions: O.D. in. | I.D. in. | H.T. in. | Cubic content cubic inches | Outside Surface sq.in. | Denty. lbs/cu.ft. | Ave Eff. 100 gms Dirt | RESTRICTION (In. of Water) Clean Air flow C.F.M. | Dirty Air flow C.F.M. 50 | 100 | 150 | 200 | 50 | 100 | 150 | 200 7 7/8 | 4 1/2 | 2 | 65.60 | 49.46 | 2 | 91.9 | - | .05 | .11 | .19 | .06 | .26 | .58 | 1.03 6 7/8 | 5 | 2 3/4 | 48.07 | 59.40 | 2 | 81.9 | - | - | .01 | .04 | .01 | .04 | .10 | .21 6 7/8 | 3 1/8 | 2 3/4 | 80.98 | 59.37 | 2 | 91.76 | .01 | .02 | .03 | .04 | .04 | .08 | .18 | .31 6 7/8 | 2 3/4 | 2 3/4 | 85.69 | 59.37 | 2 | 91.23 | - | .03 | .08 | .12 | .04 | .11 | .29 | .50 6 7/8 | 2 1/4 | 2 3/4 | 91.46 | 59.37 | 2 | 90.16 | - | .06 | .15 | .29 | .02 | .18 | .37 | .63 5 7/8 | 3 1/2 | 2 | 34.96 | 36.92 | 2 | 72.7 | - | .01 | .04 | .09 | .02 | .07 | .15 | .25 5 7/8 | 3 1/8 | 2 5/16 | 45. | 42.68 | 2 | 80.5 | .02 | .03 | .05 | .10 | .07 | .19 | .35 | .63 4 7/8 | 2 3/4 | 2 3/4 | 34.98 | 42.10 | 2 | 81.75 | .02 | .05 | .12 | .20 | .04 | .11 | .27 | .46 | ||