Seven opening mat is perfect for your group of photos. Opening sizes fit one 6 1/4 x 4 3/4, two 4 3/4 x 3 1/4, four 5 3/4 x 3 1/2" photos. Matting is conservation quality to protect your art or photos for years to come. Choose from the COLOR LIST BELOW. The second picture shows our archival stock mats. COLOR LIST: They are from left to right: Bright White, Light Grey, Medium Grey, Soft White, Pink, Cream, Red, True Green, Spring Green, Forrest Green, Light Blue, Royal Blue, Sky Blue, Navy, Brown, Tan, Charcoal, Gold, Silver, Black. Also yellow (not shown). Custom Sizes and orders are also available CHOOSING THE CORRECT MAT SIZE When purchasing a mat for a picture frame be aware that your standard frame should measure at least 1/8” larger than the size of the mat you purchase. In other words an 11 x 14” frame should actually measure at least 11 1/8” x 14 1/8”. You mat will measure 11 x 14”. In addition there is a 1/16” allowance on the mat so it can measure 10 15/16” x 13 15/16” up to 11 1/16” up to 14 1/16” and still fit in your standard frame. Some less expensive frames may not have the allowance so you would need to ask for a size that is at least 1/8” smaller than the opening on the frame itself. All mats are cut one by one for you. Therefore they may not be returned but if you have a problem let us know so we may help solve your problem.