exm 1100 DER121202KO Pull box extension rings/open bottom pull box - w/knockout

The exm Pull Box Extension Rings (SKU: 1100 DER121202KO) are open-bottom pull boxes designed to expand electrical pull box capacity in commercial and industrial applications. These extension rings feature pre-punched knockouts for flexible conduit entry, enabling efficient cable routing and management in tight spaces. Constructed for durability, they support both indoor and outdoor installations while meeting NEC safety standards. The open-bottom design simplifies installation by allowing direct wiring access without additional conduit runs. Ideal for retrofitting existing systems or new construction, these rings provide additional wiring volume without requiring full pull box replacements. Their modular design accommodates various cable sizes and configurations, reducing labor time during installation and maintenance. Compatible with standard pull box dimensions, the 1100 DER121202KO integrates seamlessly with exm’s electrical enclosure systems. The knockout pattern supports ½" to 2" conduit sizes, making it suitable for power distribution, control panels, and motor wiring applications.