The actual glass tube is smaller than the backing size. Material: Real glass tube with gas-filled, or real glass tube with gas-filled and acrylic printed. Quality: Bright & prettier colors and excellent quality. It’s workable in all countries! Easy to install: The acrylic backing or metal backing is with a chain. All you need is a nail. It will be suitable for wall, window and any indoors place you want display. Meanwhile, it is awesome gift and adorable present for family or friend! To our value customers. We guarantee the safe arrival of the neon signs. If you still want the sign, we will send the replacement parts with an instruction or a new sign for free! Change the size or place it outdoors. Please reach out your requirement before order. After receiving the item, please leave us a good feedback.