Quality Park Survivor Tyvek First Class Envelopes First Class Mail - #12 1/2 - 9 1/2" Width x 12 1/2" Length - 14 lb - Peel & Seal - Tyvek - 100 / Box - White

Patented release strip makes these open-end catalog envelopes easy to open. Convenient Flap-Stik closure does not require moisture to seal. First-class envelopes made of DuPont Tyvek won't rip, tear or puncture. They are much stronger and more secure than traditional paper envelopes. Water-resistant and moisture-resistant envelopes are lightweight to save on postage costs. Envelopes are easy to use. Simply peel and seal.

Product Type - Envelopes/Mailers-Catalog Envelopes Seam Type - Center Flap Type - Square Trade Size - 12 1/2 Security Tinted - No Opening - Open End Closure - Redi-Strip Exterior Materials - DuPont Tyvek Basis Weight - 14 lb Exterior Dimensions - 9.5 x 12.5 Colors - White Color Family - White Format/border - USPS First Class Mail Format & Border Preprinted Message - First Class Mail Pre-consumer Recycled Content Percent - 0% Post-consumer Recycled Content Percent - 0% Total Recycled Content Percent - 0%