Catalog: Parts: Brick, Modified: 45403: Color Images
Brick, Modified 5 x 12 with 1 x 2 Cutouts and 3 Holes on Side
Light Gray
by MagicGreenBus
Dark Gray
by samsam2
Dark Bluish Gray
by legoman77
Black
by samsam2

Part Color Codes:

 Color  Code  By 
 Light Gray  4190745  1  randyf 
 Dark Gray  4192278  1  randyf 
 Dark Bluish Gray  4210932  1  here4bricks614 
 Black  4192828  1  randyf