PVC Fitting Cover Sizing Charts:
Speedline Smoke-Safe PVC Fitting Covers are furnished in generic sizes where possible and specific individual sizing where required. Generic fitting cover sizes comply with pipe insulation dimensional standards ASTM C-585. Generic sizes extend from a #2 (1 5/8" OD) through a #37 (28" OD); see Charts A and B.
Chart A - Iron Pipe (Generic Sizing
| Insulation Thickness (Inches) | ||||||||
| Pipe Size | 1/2 | 1 | 1 1/2 | 2 | 2 1/2 | 3 | 3 1/2 | 4 |
| 3/8 | 2 | 7 | 9 | |||||
| 1/2 | 3 | 7 | 10 | 12 | 15 | 17 | 18 | 19 |
| 3/4 | 5 | 7 | 10 | 12 | 15 | 17 | 18 | 19 |
| 1 | 5 | 9 | 11 | 13 | 15 | 17 | 18 | 19 |
| 1 1/4 | 7 | 9 | 12 | 13 | 15 | 17 | 18 | 19 |
| 1 1/2 | 7 | 10 | 12 | 15 | 17 | 18 | 19 | 20 |
| 2 | 9 | 11 | 13 | 15 | 17 | 18 | 19 | 20 |
| 2 1/2 | 10 | 12 | 15 | 17 | 18 | 19 | 20 | 21 |
| 3 | 11 | 13 | 15 | 17 | 18 | 19 | 20 | 21 |
| 3 1/2 | 12 | 15 | 17 | 18 | 19 | 20 | 21 | 22 |
| 4 | 13 | 15 | 17 | 18 | 19 | 20 | 21 | 22 |
| 5 | 15 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 6 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
| 8 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 |
| 10 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 |
| 12 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | |
| 14 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
| 16 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | |
| 18 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | |
| 20 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | |
Chart B - Copper Tubing (Generic Sizing)
| Insulation Thickness (Inches) | |||||||||
| Tube Size | OD | 1/2 | 1 | 1 1/2 | 2 | 2 1/2 | 3 | 3 1/2 | 4 |
| 3/8 | 1/2 | 5 | 9 | 11 | 13 | 15 | |||
| 1/2 | 5/8 | 3 | 7 | 9 | 11 | 13 | 15 | ||
| 3/4 | 7/8 | 3 | 7 | 10 | 12 | 14 | 17 | 18 | 19 |
| 1 | 1 1/8 | 5 | 7 | 10 | 12 | 15 | 17 | 18 | 19 |
| 1 1/4 | 1 3/8 | 5 | 9 | 11 | 13 | 15 | 17 | 18 | 19 |
| 1 1/2 | 1 5/8 | 7 | 9 | 11 | 13 | 15 | 17 | 18 | 19 |
| 2 | 2 1/8 | 9 | 10 | 12 | 15 | 17 | 18 | 19 | 20 |
| 2 1/2 | 2 5/8 | 10 | 11 | 13 | 15 | 17 | 18 | 19 | 20 |
| 3 | 3 1/8 | 11 | 12 | 15 | 17 | 18 | 19 | 20 | 21 |
| 3 1/2 | 3 5/8 | 11 | 13 | 15 | 17 | 18 | 19 | 20 | 21 |
| 4 | 4 1/8 | 13 | 15 | 17 | 18 | 19 | 20 | 21 | 22 |
| 5 | 5 1/8 | 15 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
| 6 | 6 1/8 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 |
Note: Those 90 degree Long Radius Elbow sizes falling within the shaded areas of Chart A require special specific sizes (pipe size x insulation thickness). Generic/short radius sizes can be substituted for long radius sizes for unshaded sizes of Chart A.
Chart C - Actual outer diameter of generic sizes
| Generic # | Inches | Centimeters |
| 2 | 1 5/8 | 4.128 |
| 3 | 1 7/8 | 4.763 |
| 4 | 2 1/8 | 5.398 |
| 5 | 2 3/8 | 6.033 |
| 6 | 2 5/8 | 6.668 |
| 7 | 2 7/8 | 7.303 |
| 8 | 3 1/8 | 7.938 |
| 9 | 3 1/2 | 8.890 |
| 10 | 4 | 10.160 |
| 11 | 4 1/2 | 11.430 |
| 12 | 5 | 12.700 |
| 13 | 5 9/16 | 14.129 |
| 14 | 6 1/8 | 15.558 |
| 15 | 6 5/8 | 16.828 |
| 17 | 7 5/8 | 19.368 |
| 18 | 8 5/8 | 21.908 |
| 19 | 9 5/8 | 24.448 |
| 20 | 10 3/4 | 27.305 |
| 21 | 11 3/4 | 29.845 |
| 22 | 12 3/4 | 32.385 |
| 23 | 14 | 35.560 |
| 24 | 15 | 38.100 |
| 25 | 16 | 40.640 |
| 26 | 17 | 43.180 |
| 27 | 18 | 45.720 |
| 28 | 19 | 48.260 |
| 29 | 20 | 50.800 |
| 30 | 21 | 53.340 |
| 31 | 22 | 55.880 |
| 32 | 23 | 58.420 |
| 33 | 24 | 60.960 |
| 34 | 25 | 63.500 |
| 35 | 26 | 66.040 |
| 36 | 27 | 68.580 |
| 37 | 28 | 71.120 |
| 38 | 29 | 73.660 |