It's just a sticker to put over the original sticker. Original one says (on mine, anyhow) 1.88 lb. and new one is to say 2.25 lb.
I had 1.88 the first time around and it was still exceptionally cold, to where I rarely ran it at the 60 degree mark.
Could be the condenser. Verify it with a black light on the dye, though. Mine was around $125, I think. Be sure you have the yellow glasses, though, so it shows up well. I was told the condensers usually start leaking on the driver side toward the bottom. Mine just had all the fins beat in. What we thought was a leak ended up being metallic paint from when I painted the fascia. Condenser is not bad to change out. I removed the air box/ECM, battery and tray and fans and the radiator moved forward enough to slip it out. The lines are easy to get to on the driver side.
This second time around, we found a leak in an o-ring on the driver side and one or both of the washers on the back of the pump. All have been replaced now.