5" (127mm) Helios Solar Film Filter. Fits Optical Tube Diameter 4 5/8" (118mm) to 4 7/8" (124mm)

• 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: B06W2FMGWL 0642645705546 642645705546