The Wratten 70 gel filter passes both the longest red and the infrared wavelengths with nearly all of the remaining visible spectrum blocked (see chart- essentially everything under ~650nM is absorbed). Unlike "true" IR filters which are opaque to visible light, you can still focus and compose through the viewfinder with the Wratten 70 which passes a small amount of visible light along with infrared wavelengths. I've included a snapshot from my porch taken with my IR modified Nikon D70. The possibilities for IR and B&W photography are endless.

The filter is new and sealed in original Kodak packaging. Free domestic shipping and low cost international shipping in a hand addressed envelope. (Tracked shipping available- select the higher cost shipping option.)

Many other Wratten IR filters in my store (87, 87A, 87B, 87C, 88A, 89B, and deep red 70, regular red 25, and many more.)

Also see my filter frames at https://www.ebay.com/sch/i.html?_from=R40&_trksid=m570.l1313&_nkw=wratten+filter+frames&_sacat=0

and my filter frame holders at https://www.ebay.com/itm/New-Kodak-Wratten-Gel-Filter-Holder-for-3x3-inch-75mm-filters-67mm-connection/112280537155?