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LIGHTWEIGHT BLOCK-IN - SPECIFICATIONS (Cont.)
Chase Framed Wall
The next consideration is the framing that may surround the fireplace. The opening must be
framed to the dimensions shown in the illustration below for the size of the fireplace being
installed. Fireplace Xtrordinair suggests that the shaded framing in the illustration below be
framed in after the fireplace is installed to make the chimney installation easier. If this framing
must be installed prior to the fireplace installation be sure to account for the hearth height (if
greater than 11") before determining the header height. It must be a minimum of 17 1/2"
above the masonry enclosure. Consider installing the fireplace and masonry in the desired
location and then constructing the framing around it to the proper clearances. This method
would be preferred by the installer constructing the masonry.
To determine the depth of the chase, certain details such as facing depth and type of
masonry enclosure need to be determined before a depth can be calculated. The ideal
chase depth for a tile face is 28 1/2". For a brick face it is 26 1/2". When determining the
depth, make sure to adhere to all of the minimum clearances outlined in this manual. Make
sure to carefully check all of the specifications and make a detailed sketch outlining all the
distances for this construction before beginning. If the chase does not work out to be the
desired depth based on the facing material, additional framing may be added to the front of
the existing framing to shim the facing to the needed location.
It is suggested that this portion is
framed after masonry is completed.
Must be above the
mantle and a
minimum of 17 1/2"
above the masonry
block-in.
53" Min., 56" Suggested
Page 9
68 1/2"
Min.
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