Adapter plate allows replacement of all CB Series and MW Series heaters. Opening 14-3/4 in x 6-3/4 in. Overall 21-1/2 in x 12-1/4 in.Adapter plate allows replacement of all CB Series and MW Series heaters. Opening 14-3/4 in x 6-3/4 in. Overall 21-1/2 in x 12-1/4 in.
