The actual glass tube is smaller than the backing size. Bright & Prettier colors and Excellent Quality. Or metal backing is. All you need is. It will be suitable for wall, window and any place you want display. Meanwhile, it is awesome gift and adorable present for family or friend! We guarantee the safe arrival of the neon signs. We will resend the replacement parts or a new sign. If you want to. Change the size or color. Of the neon signs. Tell us your requirement. Your size (or colour). After receiving the item, please leave us a good feedback. To our value customers. 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.