I recently purchased this Fisher in great condition. Trying to find some info on it ? it is 24 1/2" across the top. does not have legs but has 2 small leveling legs at the back. 12 brick on bottom, 6 on each side, 4 across the back. 28 brick total. has the double arched shaped doors. Has the in-line damper. Is this one different than the grandma, grandpa series. Thanks all for such a great site !!