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A1 Envelopes

 

A1 envelopes measure 3 5/8 x 5 1/8 and are commonly used to mail RSVP cards for weddings and invitations. A1 envelopes are offered in a rainbow of colors, in fact close to 100 colors to choose from. You can order A1 envelopes printed by LCI Paper or blank to print yourself (free A1 envelope templates available). Mix and match with 3 1/2 x 4 7/8 A1 blank cards for the perfect note or RSVP card and envelope set.

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SALE
68% OFF
A1 Gmund Colors Matt Canary Yellow Envelopes - Straight Flap, 68T
 
A1 Gmund Colors Matt Canary Yellow Envelopes - Straight Flap, 68T
$2.09per 25 Pack
SALE
18% OFF
A1 Gmund Cotton New Grey Envelopes - Old World Flap, 74T
 
A1 Gmund Cotton New Grey Envelopes - Old World Flap, 74T
$6.54per 25 Pack
A1 Astrobright Blast-Off Blue Envelopes - Straight Flap, 60T
18 More Colors >
 
Blast-Off Blue Astrobright Envelopes 3 5/8 x 5 1/8 - Straight Flap - Matte
$171.58per 2500 Pack
A1 Astrobright Cosmic Orange Envelopes - Straight Flap, 70T
 
Cosmic Orange Astrobright Envelopes 3 5/8 x 5 1/8 - Straight Flap - Matte
$191.18per 2500 Pack
A1 Astroparche Aged Envelopes - Pointed Flap, 60T
2 More Colors >
 
Aged Astroparche Envelopes 3 5/8 x 5 1/8 - Pointed Flap - Matte
$288.69per 2500 Pack
A1 Astroparche Aged Envelopes - Straight Flap, 60T
2 More Colors >
 
Aged Astroparche Envelopes 3 5/8 x 5 1/8 - Straight Flap - Matte
$191.40per 2500 Pack
A1 Classic Linen Antique Gray Envelopes - Straight Flap, 80T
 
Antique Gray Classic Linen Envelopes 3 5/8 x 5 1/8 - Straight Flap - Linen
$269.61per 2500 Pack
A1 Dur-O-Tone Butcher Extra White Envelopes - Straight Flap, 60T
 
Butcher Extra White Dur-O-Tone Envelopes 3 5/8 x 5 1/8 - Straight Flap - Matte
$30.99per 250 Pack
A1 Dur-O-Tone Newsprint Extra White Envelopes - Straight Flap, 70T
 
Newsprint Extra White Dur-O-Tone Envelopes 3 5/8 x 5 1/8 - Straight Flap - Matte
$29.60per 250 Pack
A1 Glo-Tone Blue Light Envelopes - Straight Flap, 60T
2 More Colors >
 
Blue Light Glo-Tone Envelopes 3 5/8 x 5 1/8 - Straight Flap - Matte
$17.39per 250 Pack
A1 Kraft-Tone Standard White Kraft Envelopes - Straight Flap, 70T
5 More Colors >
 
Standard White Kraft Kraft-Tone Envelopes 3 5/8 x 5 1/8 - Straight Flap - Matte
$31.61per 250 Pack
A1 Parchtone Natural Envelopes - Straight Flap, 60T
 
Natural Parchtone-Envelopes 3 5/8 x 5 1/8 - Straight Flap - Parchment
$26.00per 250 Pack
A1 Plike White Envelopes - Straight Flap, 95T
 
White Plike Envelopes 3 5/8 x 5 1/8 - Straight Flap - Smooth Tactile
$332.49per 2000 Pack
A1 Plike Black Envelopes - Pointed Flap, 95T
 
Black Plike Envelopes 3 5/8 x 5 1/8 - Pointed Flap - Smooth Tactile
$384.93per 2000 Pack
A1 Poptone Limeade Envelopes - Euro Flap, 70T
17 More Colors >
 
Limeade Poptone Envelopes 3 5/8 x 5 1/8 - Euro Flap - Matte
$47.93per 250 Pack
A1 Poptone Whip Cream Envelopes - Straight Flap, 70T
17 More Colors >
 
Whip Cream Poptone Envelopes 3 5/8 x 5 1/8 - Straight Flap - Matte
$47.93per 250 Pack
A1 Royal Sundance 100 PC White Envelopes - Pointed Flap, 70T
 
100 PC White Royal Sundance Envelopes 3 5/8 x 5 1/8 - Pointed Flap - Felt
$274.79per 2500 Pack
A1 Royal Sundance 100 PC White Envelopes - Pointed Flap, 80T
 
100 PC White Royal Sundance Envelopes 3 5/8 x 5 1/8 - Pointed Flap - Felt
$298.98per 2500 Pack
A1 Royal Sundance 100 PC White Envelopes - Straight Flap, 70T
 
100 PC White Royal Sundance Envelopes 3 5/8 x 5 1/8 - Straight Flap - Felt
$184.59per 2500 Pack
A1 Royal Sundance 100 PC White Envelopes - Straight Flap, 80T
 
100 PC White Royal Sundance Envelopes 3 5/8 x 5 1/8 - Straight Flap - Felt
$202.80per 2500 Pack
A1 Astrobright Blast-Off Blue Envelopes - Pointed Flap, 60T
18 More Colors >
 
Blast-Off Blue Astrobright Envelopes 3 5/8 x 5 1/8 - Pointed Flap - Matte
$270.04per 2500 Pack
A1 Astrobright Cosmic Orange Envelopes - Pointed Flap, 70T
 
Cosmic Orange Astrobright Envelopes 3 5/8 x 5 1/8 - Pointed Flap - Matte
$281.44per 2500 Pack
A1 LCI Smooth Radiant White Envelopes - Straight Flap, 70T
 
A1 LCI Smooth Radiant White Envelopes - Straight Flap, 70T
$88.80per 1000 Pack
A1 Stardream Flame Envelopes - Straight Flap, 81T
11 More Colors >
 
Flame Stardream Envelopes 3 5/8 x 5 1/8 - Straight Flap - Metallic
$5.65per 25 Pack
A1 LCI Smooth Ecru Envelopes - Straight Flap, 70T
 
Ecru LCI Smooth Envelopes 3 5/8 x 5 1/8 - Straight Flap - Smooth
$5.75per 25 Pack
A1 LCI Linen Ultimate White Envelopes - Straight Flap, 70T
 
Ultimate White LCI Linen Envelopes 3 5/8 x 5 1/8 - Straight Flap - Linen
$7.29per 25 Pack
A1 LCI Smooth Ecru Envelopes - Pointed Flap, 70T
 
Ecru LCI Smooth Envelopes 3 5/8 x 5 1/8 - Pointed Flap - Smooth
$5.75per 25 Pack
A1 Gmund Wood Bubinga Envelopes - Straight Flap, 68T
 
Bubinga Wood Grain Envelopes 3 5/8 x 5 1/8 - Straight Flap - Wood Grain
$9.66per 25 Pack
A1 Curious Metallics Galvanised Envelopes - Straight Flap, 80T
5 More Colors >
 
Galvanised Curious Metallics Envelopes 3 5/8 x 5 1/8 - Straight Flap - Metallic
$5.95per 25 Pack
A1 LCI Felt Pure White Envelopes - Straight Flap, 70T
 
Pure White LCI Felt Envelopes 3 5/8 x 5 1/8 - Straight Flap - Felt
$9.12per 25 Pack
A1 LCI Smooth Radiant White Envelopes - Euro Flap, 80T
 
Radiant White LCI Smooth Envelopes 3 5/8 x 5 1/8 - Euro Flap - Smooth
$6.95per 25 Pack
A1 Gmund Colors Matt Dark Teal Blue Envelopes - Euro Flap, 81T
8 More Colors >
 
Dark Teal Blue Gmund Colors MATT Envelopes 3 5/8 x 5 1/8 - Euro Flap - Matte
$7.01per 25 Pack
A1 Gmund Colors Matt Olive Green Envelopes - Euro Flap, 68T
23 More Colors >
 
Olive Green Gmund Colors MATT Envelopes 3 5/8 x 5 1/8 - Euro Flap - Matte
$7.01per 25 Pack
A1 Gmund No Color Envelopes - Euro Flap, 81lb
 
No Color No Color No Bleach Envelopes 3 5/8 x 5 1/8 - Euro Flap - Organic
$6.88per 25 Pack
A1 Stardream Onyx Envelopes - Euro Flap, 81T
 
Onyx Stardream Envelopes 3 5/8 x 5 1/8 - Euro Flap - Metallic
$5.15per 25 Pack
A1 Gmund Colors Matt Limba Envelopes - Euro Flap, 91T
 
Limba Gmund Colors MATT Envelopes 3 5/8 x 5 1/8 - Euro Flap - Matte
$7.01per 25 Pack
A1 Gmund Cotton Wedding White Envelopes - Euro Flap, 74T
 
Wedding White 100% Cotton Envelopes 3 5/8 x 5 1/8 - Euro Flap - Cotton
$8.47per 25 Pack
 

A1 Envelopes (FAQs)

Is this envelope suitable for use as a wedding RSVP envelope?

Yes, A1 3 5/8 x 5 1/8 envelope size is a common, standard RSVP envelope size. To match your custom invites, we offer hundreds of A1 response envelopes in colors, finishes, and textures galore, all blank or printed with your return address.

Learn more about LCI Paper's envelope printing service.

A1 envelopes a bit too small for your taste? A2 envelopes are the second most popular response envelope size.

Can little A1 envelopes be mailed in the United States?

Yes, though they are small, A1 envelopes can be mailed through the United States Postal Service.

Do A1 3 5/8 x 5 1/8 envelopes require normal postage?

A1 envelopes require standard postage so long as they weigh 1 ounce or under.

What is the difference between 4-bar and A1 envelopes?

Pertaining to size, nothing! The terms 4-bar and A1 envelopes both refer to envelopes measuring 3 5/8 x 5 1/8 inches - the standard, popular R.S.V.P. envelope size. In technical paper jargon terms, bar comes from baronial - a style of announcement envelope with a traditional pointed flap - but in average joe, envelope size terms, A1 and 4-bar are synonymous.

These envelopes are also commonly referred to as A-1 envelopes, and 3x5 envelopes.

I need wedding reply envelope etiquette help! How do I properly address my envelopes to include both my fiance and myself?

First and foremost, the actual mailing address is the most important piece of a RSVP return address, so be sure that the address is correct and recognizable to your local post office.

Regarding the names, there are many common ways of doing this - take your pick!

  • Jane Doe and John Smith
  • J. Doe & J. Smith
  • The Future Mr. and Mrs. Smith
  • The Future Mr. and Mrs.
  • J & J (in a decorative monogram)
  • ...and with your creativity, the list goes on