| Cycle Life Based on the Weight of a 7' High Door | Less than 10,000 cycle spring |
10,000 cycle spring |
15,000 cycle spring |
20,000-30,000 cycle spring | 30,000-40,000 cycle spring |
40,000-50,000 cycle spring | 50,000-60,000 cycle spring | 60,000-70,000 cycle spring | 70,000-80,000 cycle spring |
80,000-90,000 cycle spring |
90,000-120,000 cycle spring |
120,000-150,000 cycle spring |
150,000-175,000 cycle spring |
Over 200,000 cycles |
| 400 pounds | .262x2x29 57 IPPTs |
.273x2x36 57 IPPTs |
.283x2x43 57 IPPTs |
.295x2x52 57 IPPTs |
||||||||||
| 390 pounds | .262x2x30 56 IPPTs |
.273x2x37 56 IPPTs |
.283x2x44 56 IPPTs |
.295x2x53 56 IPPTs |
||||||||||
| 380 pounds | .262x2x31 55 IPPTs |
.273x2x38 55 IPPTs |
.283x2x45 55 IPPTs |
.295x2x54 55 IPPTs |
||||||||||
| 370 pounds | .262x2x32 54 IPPTs |
.273x2x39 54 IPPTs |
.283x2x46 54 IPPTs |
.295x2x56 54 IPPTs |
||||||||||
| 360 pounds | .262x2x33 52 IPPTs |
.273x2x40 52 IPPTS |
.283x2x47 52 IPPTs |
.295x2x57 52 IPPTs |
||||||||||
| 350 pounds | .262x2x34 50 IPPTs |
.273x2x41 50 IPPTs |
.283x2x48 50 IPPTS |
.295x2x59 50 IPPTs |
||||||||||
| 340 pounds | .250x2x27 48 IPPTs |
.262x2x34 48 IPPTs |
.273x2x42 48 IPPTs |
.283x2x50 48 IPPTs |
.295x2x61 48 IPPTs |
|||||||||
| 330 pounds | .250x2x28 47 IPPTs |
.262x2x35 47 IPPTs |
.273x2x43 47 IPPTs |
.283x22x51 47 IPPTs |
.295x2x62 47 IPPTs |
|||||||||
| 320 pounds | .250x2x29 46 IPPTs |
.262x2x37 46 IPPTs |
.273x2x45 46 IPPTs |
.283x2x53 46 IPPTs |
.295x2x64 46 IPPTs |
|||||||||
| 310 pounds | .243x2x27 45 IPPTs |
.250x2x30 45 IPPTs |
.262x2x38 45 IPPTs |
.273x2x46 45 IPPTs |
.283x2x54 45 IPPTs |
.295x2x66 45 IPPTs | ||||||||
| 300 pounds | .243x2x28 43 IPPTs |
.250x2x31 43 IPPTs |
.262x2x40 43 IPPTs |
.273x2x47 43 IPPTs |
.283x2x56 43 IPPTs |
.295x2x68 43 IPPTs |
||||||||
| 290 pounds | .243x2x29 42 IPPTs |
.250x2x32 42 IPPTs |
.262x2x41 42 IPPTs |
.273x2x49 42 IPPTs |
.283x2x58 42 IPPTs |
.295x2x71 42 IPPTs |
||||||||
| 280 pounds | .234x2x25 40 IPPTs |
.243x2x30 40 IPPTs |
.250x2x33 40 IPPTs |
.262x2x42 40 IPPTs |
.273x2x51 40 IPPTs |
.283x2x60 40 IPPTs |
.295x2x73 40 IPPTs |
|||||||
| 270 pounds | .234x2x26 39 IPPTs |
.250x2x35 39 IPPTs |
.262x2x44 39 IPPTs |
.273x2x52 39 IPPTs |
.283x2x62 39 IPPTs |
.295x2x76 39 IPPTs |
||||||||
| 260 pounds | .234x2x26 38 IPPTs |
.243x2x32 38 IPPTs |
.250x2x36 38 IPPTs |
.262x2x45 36 IPPTs |
.273x2x54 36 IPPTs |
.283x2x65 36 IPPTs |
||||||||
| 250 pounds | .225x2x23 36 IPPTs |
.243x2x33 36 IPPTs |
.250x2x37 36 IPPTs |
.262x2x47 36 IPPTs |
.273x2x57 36 IPPTs |
.283X2X67 36 IPPTs |
||||||||
| 240 pounds | .218x2x21 33 IPPTs |
.225x2x25 33 IPPTs |
.225x2x30 33 IPPTs |
.243x2x35 33 IPPTs |
.250x2x40 33 IPPTs |
.262x2x51 33 IPPTs |
.273x2x62 33 IPPTs |
.283x2x73 32 IPPTs |
||||||
| 230 pounds | .218x2x22 32 IPPTs |
.225x2x25 32 IPPTs |
.234x2x30 32 IPPTs |
.243x2x36 32 IPPTs |
.250x2x40 32 IPPTs |
.262x2x51 32 IPPTs | .273x2x61 32 IPPTs |
.283x2x73 32 IPPTs |
||||||
| 220 pounds | .218x2x23 29 IPPTs |
.225x2x27 29 IPPTs |
.234x2x32 29 IPPTs |
.243x2x39 29 IPPTs |
.250x2x44 29 IPPTs |
.262x2x55 29 IPPTs |
.273x2x67 29 IPPTs |
|||||||
| 200 pounds | |
.218x2x25 28 IPPTs |
225x2x29 28 IPPTs |
.234x2x34 28 IPPTs |
.234x2x34 28 IPPTs |
|||||||||
| 190 pounds | .207x2x20 28 IPPTs |
.218x2x26 28 IPPTs |
.225x2x30 28 IPPTs |
.234x2x36 28 IPPTs |
.243x2x43 28 IPPTs |
.250x2x49 28 IPPTs |
.262x2x61 28 IPPTs |
|||||||
| 180 pounds | .192x2x15 26 IPPTs |
.207x2x21 26 IPPTs |
.218x2x27 26 IPPTs |
.225x2x31 26 IPPTs |
.234x2x38 26 IPPTs |
.243x2x45 26 IPPTs |
.250x2x51 26 IPPTs |
.262x2x65 26 IPPTs |
||||||
| 170 pounds | .192x2x16 24 IPPTs |
.207x2x22 24 IPPTs |
.218x2x29 24 IPPTs |
.225x2x33 24 IPPTs |
.234x2x40 24 IPPTs | .243x2x50 24 IPPTS |
.250x2x54 24 IPPTs |
.262x2x68 24 IPPTs |
||||||