Quick Specs
Total volume and shelf 
area are calculated by 
the Association of Home 
Appliance Manufacturers’ 
standards.
Listed by 
Underwriters 
Laboratories
AJCM12DCH
GE
®
 230/208 Volt Built-in Cool-only Room Air Conditioner
Specification Created 7/20
For answers to your Monogram, GE Café
™
, GE Profile
™
 or GE Appliances 
product questions, visit our website at geappliances.com or call  
GE Answer Center
®
 Service, 800.626.2000.
DIMENSIONS (IN INCHES) 
INSTALLATION INFORMATION: A finished opening 
of 26-1/8" x 15-3/4" clear of intrusions is required. Keep 
clearance of 4" from side walls. Brick veneer or frame  
walls should have wood studding surrounding case to 
provide firm anchoring with screws. Case can be fastened 
directly to brick or block walls with screws sunk in lead 
expansion shields.
NOTE: Units should be caulked on all four sides of case  
to the building exterior to assure building integrity.
WALL CASE FOR TENANT OPTION INSTALLATION 
When the air conditioner is offered as a tenant option, this 
wall case provides protection against outside elements.
RAB48 – includes wall case, exterior grille,  
steel closure panel and two layers of insulation.
STANDARD WALL CASE RAB46 
Solid-sided wall case fabricated of galvanized steel  
with baked enamel finish. Welded areas are coated with  
a sealing compound to help resist rust and corrosion. 
Polymer gasket surrounds opening to assure tight weather 
seal. Aluminum grille (RAG13) is included. Panels on 
interior and between case and grille provide weather 
protection prior to installation of chassis. Provide  
firm anchoring with screws. Case can be fastened  
directly to brick or block walls with screws sunk in  
lead expansion shields.
Built-in RAC Installation
(Pub. 1-G003 pg. 138) April 30.1993
Make frame if desired or caulk
between case and siding
15-3/4
26-1/8
Frame Construction
Brick Block and Brick
Frame Construction
Fill open cells
with mortar
or insulation
15-3/4
26-1/8
Lintel
Lintel
OUTSIDE INSIDE
16-7/8
Caulking
Drip Rail
Trim Molding
(if desired)
Plaster Line
Built-In Room Air Conditioners
Wall Opening for RAB36/37/38 Case
A finished opening of 26-1/8" x 15-3/4", clear of
intrusions, is required. Keep clearance of 4" from
side walls. Brick veneer or frame walls should have
wood studding surrounding case to provide firm
anchoring with screws. Case can be fastened directly
to brick or block walls with screws sunk in lead
expansion shields.
Flexible Mounting Position
Built-in RAC Installation
(Pub. 1-G003 pg. 138) April 30.1993
Make frame if desired or caulk
between case and siding
15-3/4
26-1/8
Frame Construction
Brick Block and Brick
Frame Construction
Fill open cells
with mortar
or insulation
15-3/4
26-1/8
Lintel
Lintel
OUTSIDE INSIDE
16-7/8
Caulking
Drip Rail
Trim Molding
(if desired)
Plaster Line
Built-In Room Air Conditioners
Wall Opening for RAB36/37/38 Case
A finished opening of 26-1/8" x 15-3/4", clear of
intrusions, is required. Keep clearance of 4" from
side walls. Brick veneer or frame walls should have
wood studding surrounding case to provide firm
anchoring with screws. Case can be fastened directly
to brick or block walls with screws sunk in lead
expansion shields.
Flexible Mounting Position
Built-in RAC Installation
(Pub. 1-G003 pg. 138) April 30.1993
Make frame if desired or caulk
between case and siding
15-3/4
26-1/8
Frame Construction
Brick Block and Brick
Frame Construction
Fill open cells
with mortar
or insulation
15-3/4
26-1/8
Lintel
Lintel
OUTSIDE INSIDE
16-7/8
Caulking
Drip Rail
Trim Molding
(if desired)
Plaster Line
Built-In Room Air Conditioners
Wall Opening for RAB36/37/38 Case
A finished opening of 26-1/8" x 15-3/4", clear of
intrusions, is required. Keep clearance of 4" from
side walls. Brick veneer or frame walls should have
wood studding surrounding case to provide firm
anchoring with screws. Case can be fastened directly
to brick or block walls with screws sunk in lead
expansion shields.
Flexible Mounting Position



