Lee offers two lines of filters:  deep dyed  polyester     and deep dyed polycarbonate.  Both products are known for their pure and consistent color.   The polycarbonate line of filters, also known as High Temperature filters, are designed to better withstand prolonged heat.
                                                                
                                                                 Sheet: 20" x 24"
                                                                 HT Sheet: 20" x 20"
                                                                 Roll: 24" x 25'


Gel Conversion Chart