Our WD/WD45 box is so popular with our AC customer's that it's tough to keep them on the shelf! A nice heavy duty box just like all our other boxes. Has the cutouts in the side of the box to slide your instrument panel into. Frame mount style box. Already pre-drilled to mount to the frame rail.  Includes lid with hold down wing nuts. 
B&B TECH TIP: Always run an auxilary ground wire off the instrument box to the Battery ground to insure a good ground at the instrument box! Don't rely on the instrument box making a good ground when fastened to the Battery box! Paint makes an excellent insulator with this type of mounting. 
Battery Box Dimensions:
7 3/16" Wide  8 3/4" Tall  9 3/4" Long