Any side can be removed, retaining lay-in feature regardless of how the elbow is oriented. Sides are held together with screws.

Hoffman Wireway Elbow, Series: F40PF, 14 in Width, 14 in Length, 90 deg Bend, For Use With: 12 x 12 in NEMA 1 Lay-In Flat Cover Wireway, Steel, Gray, Painted

• Sides are held together with screws
• Lay-in Painted 90 deg Elbws have all removable sides, retaining lay-in feature regardless of how the elbw is oriented
• Lay-in feature allows wires and cables can be laid in along wireway run
• No pulling through of wires or cables prevents damage to insulation that often occurs in a pull-through wiring system

• Warranty Information https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/nVent_HOFFMAN_F1010G36_Warranty.pdf
• Catalog https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/nVent_HOFFMAN_F88T148GVP_Catalog.pdf