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Roptex (Brown Kraft)

Roptex (Brown Kraft)
These envelopes are made from long fiber kraft paper that is a stronger stock than sulphite. Roptex (Brown Kraft) has a vellum finish is SFI certified and is primarily used for projects requiring added strength. (Note 32 and 40 Roptex are Brown Kraft). Available styles include ungummed flap or thumb cut.