Wolf ovens and ranges Challenger model series C, CH, CHSS, KCH, KCHSS, XCH, etc.
For early C-series Challenger ranges by Wolf (Not for Challenger XL series, see part DVOR-XLOB for XL series oven burner).

Dimensions (including bracing): 17-3/4" x 5"
Also fits early Wolf Gourmet Series from early 90's (1996 and earlier with model #'s A-4-9-HB11, A-6-9 etc.)