Technical Data
ASTM Specification C 27 and C1261

	Red Firebrick	Buff Firebrick
P.C.E. Min.	13	15
Modulus of Rupture	1000	600
Apparent Porosity	13-17%	13-17%
K factor - R value	not tested	0.657K - 1.525R
Recommended Max. Operating temperature	1750 F	2000 F

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Buckley Rumford Fireplaces
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