Strathmore Writing Envelopes， #10 Commercial Flap Writing 25% Cotton Wove Finish 24 lb.， 4-1/8 x 9-1/2 Inch， 500 Envelopes/Box - Sold as 1 Box， Natural White (M27565)<div style="text-align: left;"><strong>[Product Information]</strong><ul><li id="replacementPartsFitmentBullet" class="aok-hidden" data-doesntfitmessage="We're not sure this item fits your " data-fitsmessage="This fits your "><span class="a-list-item"><span id="replacementPartsFitmentBulletInner"><a href="#" class="a-link-normal hsx-rpp-fitment-focus">Enter your model number</a>to make sure this fits.</span></span></li><li><span class="a-list-item"> 25% Cotton #10 Commercial Flap Envelopes (4-1/8 x 9-1/2 Inch) </span></li><li><span class="a-list-item"> 500 envelopes per box </span></li><li><span class="a-list-item"> 24lb (90 gsm) Wove Finish </span></li><li><span class="a-list-item"> Matching paper stock available </span></li><li><span class="a-list-item"> Inkjet &amp; Laser Compatible. Acid Free for Archival purposes </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/41eTK1-irgL.jpg" noproxy>