Standard 24x48, 4 x 40 bulbs, with 27x51 "pill", "cloud" or "puff" diffuser.
https://www.fluorolite.com/buy-now/ceiling-light-decorative-diffuser/
Dim, ugly bulbs, one spare, should be replaced with LEDs,
Installed in kitchen 2007, removed 2025, repaired minor corner crack while in storage.
Rarely used after 2012 because we got new under cabinet lighting.