Industry Description
2-1/8 DEEP 4 SQUARE 1/2 & 3/4 KNOCK OUT EXTENSION RING
Modified Industry Description
2 1/8 DEEP 4 IN SQUARE EXTENSION RING, 1/2 AND 3/4 KNOCKOUTS
AD Description
Crouse-Hinds TP443 TP Series Drawn Box Extension Ring With Conduit Knockouts, 4 in L x 4 in W x 2-1/8 in D, Steel