This is the fastest way to determine what springs you have.

HOW TO DETERMINE WIRE SIZE ON UNWOUND SPRINGS

STEP 1: CAREFULLY COUNT 20 COILS AND MEASURE TO THE NEAREST 1/16". THEN SEE THE CHART BELOW TO DETERMINE YOUR WIRE SIZE. STANDARD RESIDENTIAL WIRE SIZES ARE  .207, .218, .225, .234, .243, .250, .262.

STEP 2: THE NEXT THING TO DO IS MEASURE THE LENGTH OF AN UNWOUND SPRING ***COUNTING COILS AND MEASURING WOUND SPRINGS, TO DETERMINE SPRING WIRE SIZE, WILL PROVIDE FALSE DATA***

STEP 3: DETERMINE THE INSIDE DIAMETER OF THE SPRING.(STANDARD INSIDE DIAMETERS ARE 1 3/4" AND 2")

LENGTH OF 20 COILS     WIRE SIZE

4 1/8"                                     .207

4 3/8"                                     .218

4 1/2"                                     .2253

4 5/8"                                     .2343

4 7/8"                                     .2437

5"                                           .250

5 1/4"                                     .262

IF YOU HAVE 1 3/4" ID SPRINGS, CONTACT US WITH WIRE SIZE AND LENGTH SO WE CAN RECOMMEND A CORRESPONDING 2" SPRING.