Osburn OB04002 - Manual (Page 46)

Stratford Fireplace Installation and Operation Manual
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CLEARANCES**
M* 53 1/2" (1359 mm)
N* 75 1/2" (1918 mm)
*When drywall panels or any other finishing material inside the chase around the fireplace is to be
used, add its thickness to the measurement.
**Values M and N are minimum measurements. They may need to be increased to alloy
installation of a fresh air intake kit or forced air distribution kit or depending on the finish material
used.