Hi all, I'm wondering what the difference is between SPP and SP for the GE Ecolux F32T8s. So far it doesn't seem to make much difference.

I'm still looking for info on the difference between SPP and SP T8 lamps. Any info appreciated

In the U.S. at least, the SP series is no longer made in 4' length, due to more stringent efficiency requirements that went into effect in 2018.  The CRI and lumen output of the SPP are a bit higher, but still a tad below the SPX series.

Thanks Patrick I had no idea the SP line was discontinued, is the SPP still made?

I have a few cases of the SPP41 and I got some cases of the SP35 and one small case of 2600K Reveal F32T8s coming in, the gallery can expect some pics with the warmwhites come in