LUX® A1 Envelope in copper metallic color measuring 3 5/8" x 5 1/8" features an elegant square flap with moistenable glue for sealing. Envelope of paper weight 80 lbs is laser, sold as 250 per pack. Opening: Square flap. Dimensions: 3 5/8"L x 5 1/8"W. This diminutive envelope is the smallest of its kind allowed through the mail. Closure: Moistenable glue. Laser printer compatible. Copper metallic. Material: Paper. A modern way to convey quality and add personality, with sparkle and shimmer that stands out. Paper weight: 80 lbs. A1 Invitation Envelopes (3 5/8 x 5 1/8) are perfect for party invites/thank you cards/wedding invites/announcements. Size: A1 (3 5/8" x 5 1/8"). Looks amazingly like the metal or mineral the color is named for. Collection name: Metallics. Its dimensions make it the most common-sized envelope used for RSVP and announcement purposes. Comes in Copper Metallic, 80lb. Text Paper. For those occasions calling for a dainty announcement envelope. Peel & Press Sealing Method. LUX® A1 Envelope in copper metallic color measuring 3 5/8" x 5 1/8" is ideal for RSVP and occasions calling for a dainty announcements, sold as 250 per pack. The A1 Invitation Envelope (3 5/8 x 5 1/8) in 80lb. Copper Metallic is a shimmery warm brown colored envelope. This envelope has a sophisticated square back flap and is suited for RSVP cards, invitations, announcements, and notes. The A1 is easily sealed by a Peel & Press strip, and its dimensions make it the most common envelope used for RSVP as the A1 size fits inside all other "A" envelope sizes. Available both plain and printed for customization, branding and creative uses, starting in small quantities of 50 to large quantities of 50,000 and more.