Replacement 8"x 10" Light Red (1A type) safelight filter safelight housings that accept 8" x 10" filters. These permanently pigmented plastic filters can't shatter like glass filters can. The red filter can be used with many B&W photographic papers, but is also recommended for orthochromatic graphic arts materials. Please refer to the product data sheet packed with the material you are using to confirm that this is the recommended safelight filter for that specific material.
NOTE: No safelight filter is 100% safe for an indefinite period! Always perform a safelight test with the materials you're using to determine the maximum exposure before fogging begins to occur. For information on how to conduct safelight testing, click here.