PGD Spring Replacement Calculator

Combo: ${codes}
Combo IPPT: ${sumIPPT.toFixed(2)}
System Cycle Rating: ${bestMinCycle}

Designed to calculate replacement springs quickly using only springs we carry.

Door Height (ft): Door Width (ft): Number of Installed Springs (1-4):

Number of Replacement Springs (1-4): Number of Struts to Add:

Tolerances: Total replacement IPPT must be within -0.1 to +2.0 of the calculated total.
The system cycle rating is determined by the weakest spring in the combo.
Adding struts increases required IPPT.