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Garage Door Springs

The garage door springs chart listed below will help you decide which garage door spring you need if you are unable to locate the number printed on your current spring.

Catalog Number "A" Length Over Coils "B" Outside Dia. "C" Type of Ends "D" Wire Dia. & Gauge Initial Tension ** Max. Allowable Stretch (Inch.)
P920 20" 1 1/4" PLUG (.148) #9 45 - 55 16
P928 28" 1 1/4" PLUG (.148) #9 45 - 55 18.5
             
P720 20" 1 5/16" PLUG (.177) #7 110 - 120 16
P728 28" 1 5/16" PLUG (.177) #7 110 - 120 18.5
P730 30" 1 5/16" PLUG (.177) #7 110 - 120 20
P732 32" 1 5/16" PLUG (.177) #7 110 - 120 21.25
P736 36" 1 5/16" PLUG (.177) #7 110 - 120 24
             
P520 20" 1 5/8" PLUG (.207) #5 135 - 145 16
P528 28" 1 5/8" PLUG (.207) #5 135 - 145 22
P530 30" 1 5/8" PLUG (.207) #5 135 - 145 25
P532 32" 1 5/8" PLUG (.207) #5 135 - 145 26.5
P536 36" 1 5/8" PLUG (.207) #5 135 - 145 26.5
P542 42" 1 5/8" PLUG (.207) #5 135 - 145 28.5
             
P320 20" 2" PLUG (.244) #3 165 - 185 16
P328 28" 2" PLUG (.244) #3 165 - 185 18.5
P330 30" 2" PLUG (.244) #3 165 - 185 21.5
P332 32" 2" PLUG (.244) #3 165 - 185 21.5
P336 36" 2" PLUG (.244) #3 165 - 185 24.25
P342 42" 2" PLUG (.244) #3 165 - 185 28.5
             
SL728 28" 1 5/16" HOOK (.177) #7 110 - 120 18.5
SL730 30" 1 5/16" HOOK (.177) #7 110 - 120 20
SL732 32" 1 5/16" HOOK (.177) #7 110 - 120 21.25
             
SL528 28" 1 5/8" HOOK (.207) #5 135 - 145 22
SL530 30" 1 5/8" HOOK (.207) #5 135 - 145 25
SL532 32" 1 5/8" HOOK (.207) #5 135 - 145 26.5