Request 20 x 24 inch gel size. Color packs are separate. Colors can be used on house windows, without the color window. Use, function and quality may be affected and limited. Color gels are still functional.
All gels are heat resistant, professional grade. .
If you travel internationally you understand the importance of color in the culture and daily living in many societies. If you need a reminder, review any international publication for the diversity and power of color used throughout the world. The variety of colors seen in nature are unlimited. A simple set of seven basic or primary rainbow colors are recommended as a starting point. Colors can be mixed optically to achieve a new balancing energy.