GamChroics are manufactured to high standards of consistency and performance. Precise optical coatings on 1/8 inch thick glass (3.3 mm) make a highly heat resistant, durable and long lasting color filter that is ideal for low maintenance installation. GamChroics are available in a variety of traditional color filter sizes for ellipsoidal spotlights, PAR units, MR-16's and more. Standard frame sizes include: 10x10, 7-1/2 x 7-1/2, 6-1/4 x 6-1/4, 3-3/8 x 3-3/8, 2 inch rounds and more. They may also be ordered in custom sizes to meet your special requirements. For more information, call toll free 888-GAMCOLOR (US and Canada)