JAM Paper & Envelope Commercial Style Envelopes are essential for sending important documents. When your business or office is busy mailing invoices statements and letters there s no time for addressing each envelope. That s where these envelopes with translucent plastic windows come in saving you time and headache. Contents will be safe and appropriate showing that you mean business. This pack contains 25 commercial window envelopes. Each envelope measures 4 1/8 x 9 1/2 has a booklet opening straight flap gum closure is made from 24 lb. paper and has a smooth finish. Size: 4.125in x 9.5in | Color: White | Quantity: 25/pack