Quadra-Fire 5100I-NL-B, 5100I-GD-B warranty Hearth Extension Insulation Alternatives, R Value =

R

5100-I ACT WOOD INSERT

F. Hearth Extension

If the hearth extension is lower than the fireplace opening, the portion of the insert extending onto the hearth must be supported. Manufacturer designed adjustable support kit can be ordered from your dealer. Refer to page 23.

Hearth Extension Insulation Alternatives, R Value = 1.03

	k per	R per	Minimum
Material	inch	inch	thickness
	thick	thick	required
Hearth & Home HX3 & HX4	0.49	2.06	1/2 in.
USG Micore 300™	0.49	2.06	1/2 in.
USG Durock™ Cement Board	1.92	0.52	2-1/4 in.
Cement Mortar	5.0	0.20	5-7/8 in.
Common Brick	5.0	0.20	5-7/8 in.
Ceramic Tile	12.50	0.08	14-5/8 in.
Marble	14.3 to	0.07 to	16-5/8 in. to
	20.0	0.05	23-3/8 in.

Page 10 438-0380E April 21, 2010