NEMA 4 vs NEMA 4X Enclosure (2)
In addition to this, not only NEMA 4 has these features but also its subset
NEMA 4X Enclosure
NEMA 4X Enclosure Review & Comparision
NEMA 4 vs NEMA 4X Enclosure (1)
Electrical Enclosures: What is the difference between NEMA 4 and NEMA 4X Enclosure? HERE IS