Original Vintage O'Keefe & Merritt Stove NEW PORCELAIN ENAMELED 'Donut Style' Simmer Grate. This is the thinner cast style with 3 short pegs on the underside. These are often found on the late 50's, early 60's O'Keefe & Merritt stoves. 

MEASUREMENTS:

Ring Width (from side to side) 8-1/2" / Standing upright on cat ears to top of ring 8-5/8"  /   Outer simmer ring diameter 3-1/2"