In english, decifered for you who continue to struggle:
MESH type nets have always been replaced every 2 years.
RIBBON type were allowed to be used longer, then the rulebook changed it to every 2 years, then NHRA got major backlash, now they have relented, and returned to allowing RIBBON type nets to continue in use.


"Livin' in a powder keg and givin' off sparks" 4 Street cars, 5 Race engines