EXM 1100 DER121204, NEMA 1 Pull Box Extension Ring with Knockouts, Dimension 12'' x 12'' x 4'', IP 20, Mild Steel Painted ASA 61 Gray

The 1100 DER extension rings are installed over 1100 DF pull boxes to extend the depth of the enclosure. Stand-alone 1100 DER extension rings can also be used for applications which require a pull box with an open bottom. The extension rings are made of high quality 16 GA steel. Four internal mounting holes are provided. Covers are not included with the 1100 DER. When they are used as extension rings, the covers from the 1100 DF boxes can be installed on the 1100 DER. These boxes are also available without knockouts (add suffix ‘N’ to the catalog number). When they are used as standalone, open bottom pull boxes, covers must be ordered separately. Enclosures are finished with ANSI/ASA 61 smooth gray heat fused powder paint, electro-statically applied on a pretreated base.