NEMA 4 and 4X are common outdoor box ratings. 4X adds better corrosion resistance.
Use the NEMA line on the Transmitter Solutions enclosure or reader page for wet or wash-down sites.
NEMA
An enclosure rating for dust, water, and corrosion, used alongside or instead of ingress protection (IP).
Also called
NEMANEMA certificationcertification NEMAcertification nema
Catalog fields
Certifications & StandardsIP Rating
Source: Transmitter Solutions product training