Mencia Acrylic Glass Back Battery Housing back door for Samsung Galaxy Note 5 At&t N920a(White)With Adhesives Come without instructions. This item is made from Acrylic glass and plastic, the inside part is plastic outside surface is Acrylic glass. Professional technician is needed for installation. Send From China via USPS takes 7-20 days to USA. If you are not sure that if this is the item you need contact Mencia for help.