Osburn OB04002 - Manual (Page 99)

Stratford Fireplace Installation and Operation Manual
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3- Using a power screwdriver and hex tip
5/16", remove the slab holders (D)
and the refractory slabs (E) and (F).
4- Remove the rear refractory slab (G).
To install new refractory slabs, follow the
above steps in reverse.