Southwire CBP-APO Octagon Concrete Box Adapter Plate 2-3/4" Or 3-1/2" O.C. Holes
Octagon concrete box cover with an adaptor plate for 4 in octagon extension rings or covers are used on octagon concrete boxes. The open space in their adapter plate converts concrete box covers to accept 4 in octagon boxes or covers.
Octagon concrete box cover with an adaptor plate for 4 in octagon extension rings or covers are used on octagon concrete boxes. The open space in their adapter plate converts concrete box covers to accept 4 in octagon boxes or covers.
