Adjacent   Mantle    Top       Side
            SideWall   to top    Facing    Facing
            to side              to top    to side
               A         B         C        D

Small I1000S   15"       20"       14"      7.5"
Medium I2000M  10"       17"       12.25"   8 "
Large I3000L   13"       16"       18"      6.5"
Hearth Heater  10"       25"       14"      8.5"
H2000M


              Minimum     Minimum     Minimum
              Hearth      Hearth      HearthSide
              Extension*  Elevation*  Elevation*
                 E          F            G

Small I1000S     16"        1.5"         8"
Medium I2000M    16"        1.5"         8"
Large I3000L     16"        1.5"         8"
Hearth Heater    18"        1.5"         6"
H2000M

                                    From Unit
                                  A    B      C

Small    with Convector Airmate   13"  11"    8"
F1000S   with Rear Deflector      15"  10.5"  11"

Medium   with Convector Airmate   14"  10"    6"
F2000M   with Rear Deflector      17"  11"    9"

Large    with Convector Airmate   18"  12"    8.5"
F3OOOL   with Rear Deflector      20"  14"    10.5"

                                  From Flue
                                  Center-line
                                  D    E      F

Small    with Convector Airmate   25"  17.5"  20"
F1000S   with Rear Deflector      27"  17"    23"

Medium   with Convector Airmate   26"  16.5"  17.5"
F2000M   with Rear Deflector      29"  17.5"  21"

Large    with Convector Airmate   32"  18.5"  22"
F3OOOL   with Rear Deflector      34"  20.5"  24"

                                    From Unit
                                  A     B     C

Small    with Convector Airmate   9"    5"    3"
F1000S   with Rear Deflector      13.5" 5"    5"

Medium   with Convector Airmate   10"   4.5"  7.5"
F2000M   with Rear Deflector      14"   7"    8.5"

Large    with Convector Airmate   16"   9.5"  8.5"
F3OOOL   with Rear Deflector      20"   12"   8.5"

                                  From Flue
                                  Center-line
                                  D     E      F

Small    with Convector Airmate   21"   11.5"  15"
F1000S   with Rear Deflector      25.5" 11.5"  15"

Medium   with Convector Airmate   22.5" 11.5"  20"
F2000M   with Rear Deflector      26.5" 14"    21"

Large    with Convector Airmate   30"   16"    22"
F3OOOL   with Rear Deflector      34"   18.5"  22"

                                    From Unit
                                  A     B      C

Small    with Convector Airmate   11"   6"     6"
F1000S   with Rear Deflector      13"   5"     9"

Medium   with Convector Airmate   16"   8.5"   7.5"
F2000M   with Rear Deflector      18"   8.5"   8.5"

Large    with Convector Airmate   18"   9.5"   10"
F3OOOL   with Rear Deflector      20"   12"    10"

                                  From Flue
                                  Center-line
                                  D     E      F

Small    with Convector Airmate   23"   12.5"  18"
F1000S   with Rear Deflector      25"   11.5"  21"

Medium   with Convector Airmate   28.5" 15.5"  20"
F2000M   with Rear Deflector      30.5" 15.5"  21"

Large    with Convector Airmate   32"   16"    22.5"
F3OOOL   with Rear Deflector      34"   18.5"  23.5"

                                  From Unit
                                  G      H

Small    with Convector Airmate   11"    7"
F1000S   with Rear Deflector      13"    5"

Medium   with Convector Airmate   10"    4.5"
F2000M   with Rear Deflector      14"    7"

Large    with Convector Airmate   16.5"  9.5"
F3OOOL   with Rear Deflector      not approved 
                                   for Alcove

                                  From Flue    Min.
                                  Center-line  Width
                                  I      J      K

Small    with Convector Airmate   23"    13.5"  46"
F1000S   with Rear Deflector      25"    11.5"  50"

Medium   with Convector Airmate   22.5"  11.5"  44"
F2000M   with Rear Deflector      26.5"  14"    52"

Large    with Convector Airmate   30"    16"    60"
F3OOOL   with Rear Deflector      not approved
                                   for Alcove