Arlington’s IN/OUT OUTLET BOXES are adjustable for wall thicknesses up to 1-1/2"; perfect for use when the final thickness is not known; double drywall, change orders, tile, etc. Single-gang horizontal box FA101H for countertops and horizontal outlets...single-gang, low profile FA101LP. Made for new work installations with shallower wall cavities, it’s shorter than our ‘regular’ single-gang IN/OUT outlet box – perfect for smaller spaces.• Complies with 2014 NEC, 314.20 for set back boxes• Always accessible depth adjustment screw• Secure installation on wood or steel studs in new construction