nVent Hoffman - Hoffman A884SUG 8 x 8 x 4 Inch Galvanized Steel NEMA 1 Screw Cover Pull Box Extender

The Pull Box Extender, Type 1, is used in commercial and general industrial applications that previously required a custom sized pull box, or to create additional wiring space for existing pull box installations. It is installed by simply sliding the product on a pullbox, using a common hole pattern, cover and hardware, making it a time saving solution. Features: Unique keyhole screw slots for easy installation; Plated steel screws included to mount to pull box; Compatible with Type 1 Pull Box accessories; Maintains grounding between main enclosure and extender; Extenders are finished with paint over plated surfaces