When wireway enters an enclosure, a box connector should be used on the inside of the enclosure to ensure a tight and stable seal.

Hoffman Box Connector, Series: F22, For Use With: 4 x 4 in NEMA 4X Stainless Steel Feed-Through Wireway, 304 Stainless Steel, 5.38 in L x 5.38 in W

• When wireway enters an enclosure, a box connector should be used on the inside of the enclosure to ensure a tight and stable seal
• Connects to other wireway sections and fittings and protects wires and cables in frequently hosed down, very wet or highly corrosive applications

• Instruction/Installation Manual https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/nVent_HOFFMAN_F66WG_Installation_Manual.pdf