6.5" (165mm) Helios Solar Film Filter. Fits Optical Tube Diameter 6 1/8" (157mm) to 6 3/8" (162mm)

• All Seymour Solar products meet the ISO 12312-2 requirements. Our Helios Solar Glass and Helios Film block out 99.999% of all light, including harmful IR & UV rays.
• Packaged in a foam lined storage box along with instructions for use and care.
• Sturdy aluminum cell with Helios Solar Film.
• Secured with 3 nylon thumb screws.
• We have experience in manufacturing safe solar filters for over a decade.

• Item Reference: B06VSKTWS6 0642645705607 642645705607