Additional panels may be purchased for the Whimsy Lights. They easily slide in and out, so you can change your panel with the seasons, holidays or special occasions. Photo Frame styles also available. Panels are 4" x 6". Enter the quantity you'd like and we will contact you for design and color choices. Pattern choices are musical, fern leaves, fall leaves, trees, abstract design,snowflakes, birds, butterflies, dragonflies, Pianos, guitars, photo frames and more.