Basis A1 Square Flap envelopes

are the perfect envelope for enclosing your wedding response cards.  These cost effective RSVP envelopes have a square flap with a fine vellum finish. Measuring in at 3 5/8 x 5 1/8 inch, these 4 Bar envelopes will hold a party RSVP enclosure up to 3 1/2 x 5 inches.  With a broad range of colors, Basis is sure to match your DIY invitations.  

These are the smallest envelopes that can be mailed through the USPS. The colors of these RSVP envelopes are a perfect match to our Basis Card Stock and Envelopes.  Labels or special writing tools may be necessary when addressing the dark colored envelopes.