Regular No. 10 executive embossed envelopes with a single window help mail get noticed. The embossed ridge envelopes give mailings a unique, sophisticated look. Ridges do not affect printability. Window eliminates the need to address the envelope separately. Positioned to fit most invoice address layouts, this left-side window envelope saves time and effort. Fully gummed flap provides a secure seal. 24 lb. bright-white stock and contemporary side seam give a professional impression.