Give the exterior look of your building an easy upgrade with an architectural louvered exterior grille. GE Architectural Aluminum Exterior Grille for GE built in -TTW-AC commencing with AJ. 26" X 15 5/8" X 1 3/8". Product comes in aluminum/silver metallic color paintable in the field. Includes 2 installed air deflectors to prevent air recirculation. Extruded aluminum grille for application with RAB46, 47 or 48. NOT compatible with the RAD4A1 and RAD10 EXTERNAL drain kits. Use of this grille would require the use of the internal tube configuration to drain the unit. Replaces 4150115. This item is not returnable.