ASE10X10X4NK, Hoffman enclosure, Contractor, Type 1, Screw-Cover Type 1 Pull Boxes and Accessories, Pull Box, Screw Cover, 10 x 10 x 4, Painted Steel, Use this enclosure in commercial and general industrial applications that require a junction or pull box. ASE10X10X4NK is For flush installations, order flush covers and door frames separately. 16, 14 or 12 gauge steel or plated steel.