Exact Opaque White envelopes are available in 60 lb and 70 lb text weights. Exact Opaque White offers economically priced 50 lb, 60 lb, 70 lb, 80 lb and 100 lb text weights accompanied by 65 lb and 80 lb cover weights with matching envelopes available. The entire line is Forest Stewardship Council certified and contains 30% recycled post consumer waste. The paper is smooth, bright white and has a high opacity to minimize show through. These papers are perfect for everyday projects requiring a paper with versatile characteristics. All of the weights are guaranteed for use in laser printers, inkjet printers and copiers. You'll find the lighter weight text weight options (50 lb, 60 lb, 70 lb and 80 lb text) perfect for projects that require a paper similar in weight to standard copy paper or stationery paper. The 100 lb text and 65 lb cover are considered to be medium weight papers that begin to exhibit a heavier feel. The heaviest weight offered is the 80 lb cover which would provide the proper bulk and rigidity for greeting cards or business cards. This paper is produced by Wausau Paper Company.