This was part of my idea for lighting a crawlspace storage area at my parents house, installed in the mid-1990's when the insulation was re-done. It is a Lithonia strip with an Advance rapid--start magnetic ballast IIRC, almost identical to one I later bought for my home. The lamp is a Philips F40T12 "Home Light" triphoshor 4100K and a full-mercury version - no green ends!
I have a pair of those Philips cool white HomeLight tubes in use in a Lithiona wraparound from the 90s...they don't start reliably in cold though...seems those Philips tubes with cathode guards in general when used on LPF ballasts don't always start well in cold...are the lamps with cathode guards more stubborn?
I haven't been up there for a long time, so I don't remember the details on the ballast - I think it was what they call "NPF" (power factor around .50-.70). I did change the tube to a GE residential light as the Philips indeed had trouble igniting in the cold. The Philips tube was saved as a spare for one of my preheat fixtures where it should work fine.
It could be HPF....I can't remember. Usually HPF ballasts fire up the lamp pretty quickly, and this one does not...it's probably an RL-140TP. I'll have to look sometime this summer while my parents are away and I can clear enough stuff out of the way to get to it The GE tube is non-Ecolux. Here's a close up of the original Philips lamp etch.
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Is the F40/RES tube an Ecolux? Is it a pain getting up there to change the tube?
Do you have a pic of the Philips' etch?