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Offices and businesses that need to send heavy items and thick stacks of reports and invoices need a special envelope that’s equipped to carry the extra load. The #12 Roptex (Brown Kraft) envelopes not only has higher strength and load-carrying capacity but it also offers more space than #11 and #10 office envelopes. This envelope is made from 28lb brown Kraft paper. The paper used is SFI certified and is much more durable than regular stock 24lb paper. The enhanced durability feature also makes these envelopes ideal for storing important documents and precious items. These envelopes have a blank, windowless design. These #12 brown Kraft envelopes are ideal for sending international and long-distance domestic mails. Measuring 4.75x 11 inches with an enclosure size of 4.5 x 10.75 inches, these are often used to send multi-paged statements, reports, and letters. The #12 envelope size is highly versatile and thus these envelopes can be used for all standard office mails.
I use these larger envelopes for my business on a regular basis. These kraft envelopes are just right for holding several sheets. Good price, fast shipping. Very satisfied.