Nice antique cast iron arched top heat grate wall register. Its unmarked, the manufacturer is unknown.  Nice decorative gothic pattern. It's in a worn black finish with surface rust. The grill front does have a small broken out section (See photos 8 & 9). But the louvers still function as it should. Overall good, salvaged condition. Please look over the pictures below and ask question when needed. Thanks for your interest. 

Measures approx.: 17 1/8" wide x 14 1/2" tall x 2 7/8" thick

Rough in opening: 13" tall x 15 1/2" wide