Additional Length - Add On Charge

My custom length is between 72" and 108" My custom length is between 108" and 144" My custom length is between 144" and 180" My custom length is between 180" and "216 My custom length is between 216" and "252 My custom length is between "252 and "288 My custom length is between "288 and "324 My custom length is between "324 and "360 My custom length is between "360 and "396 My custom length is between "396 and "432 My custom length is between "432 and "468 My custom length is between "468 and "504 My custom length is between "504 and "540