Corbin Russwin U | Sargent CO | Yale R4 Specifications 2-3/4" (69.85mm) Rose Specifications: CORBIN RUSSWIN U Rose (Mortise, Tubular) SARGENT CO Rose (Mortise, Tubular) YALE R4 Rose (Mortise, Tubular) Close You may also like Corbin Russwin T | Sargent O | Yale R6 Corbin Russwin Y | Sargent TR | Yale R8 Corbin Russwin W | Sargent CR | Yale R7