Nice antique cast iron arched top Victorian heat grate wall register. The manufacturer is unknown as its unmarked.  Nice decorative pattern. The register is in a worn chipped shabby white finish with minor surface rust.  The louvers are complete and function as they should. The register is complete, but the cast iron grill has a crack around the top mounting hole as shown in photo 9. Overall good, salvaged condition. Please look over the pictures below and ask question when needed. Thanks for your interest. 
Measures approx.: 8 5/8" wide x 11 5/8" tall x 2 1/4" thick 
Rough in opening: 7" x 10"