The serial number is known to Eaton to be SUSPECT.
Eaton Crouse-Hinds series Pauluhn WashPro WP linear fluorescent light fixture,1/2" entry,4 ft,Acrylic lens,T5HO mini bi-pin,Non-metallic end caps,Standard end cap with one strain relief connector and WP1050MTK straps,3-lamp,120-277 Vac,54W