4 1/16" x 5 3/8" + Flap, Crystal Clear Bags® (100 Pieces) [B4B1]

In stock
  • Buy 1 pack of 100 for $6.09
       100 pieces @ $0.0609 each = $6.09
  • Buy 10 packs of 100 for $3.99 each and save 34%
       1000 pieces @ $0.0399 each = $39.90
  • Buy 30 packs of 100 for $3.39 each and save 44%
       3000 pieces @ $0.0339 each = $101.70
  • Buy 120 packs of 100 for $2.69 each and save 56%
       12000 pieces @ $0.0269 each = $322.80
  • Buy 360 packs of 100 for $2.09 each and save 66%
       36000 pieces @ $0.0209 each = $752.40
  • Larger orders, please contact us for pricing.
Your cards and envelopes will steal the show in these Crystal Clear Flap Seal Bags. Our B4B1 flap seal bag measures 4 1/16" x 5 3/8" and is ideal for a set of 6 to 8, 4 Baronial or A1 size envelopes and cards. The adhesive is on the bag flap and provides a secure closure for your product. This resealable bag is acid-free and archival safe.

A protective sleeve is ideal for keeping your cards and envelopes in top-notch condition. B4B1 is our 4 1/16" x 5 3/8" Crystal Clear Flap Seal Bag and is perfect for holding a set of 6 to 8, 4 Bar or A1 size envelopes and cards. Package art, photos, crafts, and just about anything else. With the adhesive is on the flap, you can adjust the height of this bag if necessary. Simply peel the adhesive, insert your items, and fold the flap over and seal. This bag is made with archival-grade BOPP material for exceptional clarity and protection. Your product will be safe from dust, fingerprints, and handling while maintaining a professional appearance. Acid-free and lignin-free.

Product Details:

  • Pack Quantity: 100
  • Color: Clear
  • Thickness: 1.6 mil
  • Material: BOPP (Biaxially Oriented Polypropylene)
  • Outer Dimensions: 4 1/16" x 5 3/8"
  • Closure: Flap Seal (adhesive on flap)
  • Heat Sealable: Yes
  • Food Safe: Yes

Features & Benefits:

Crystal Clear Flap Seal Bags have the following features:

  • Crystal Clear Optical Clarity
  • High quality material will not easily rip, tear, wrinkle, or fog
  • Resealable adhesive strip on the flap of the bags (allows you to customize the fit)
  • Fast insertion and sealing
  • Acid and lignin free
  • Archival safe
  • USPS approved (Tell me more)
  • Made with 10% recycled content


Most popular use is for holding A1, 4 Baronial cards and envelopes (6 to 8 sets).

This product works well with the following:

  • Stationery
  • Art
  • Photos
  • Candy
  • Crafts
  • Bulk mail
  • ...and more!

You Might Be Looking For:

  • For this bag with the adhesive on the body of the bag, try B4B1PC
  • For a longer version of this bag, try B48
  • For a wider version of this bag see B4B2
  • For our full line of Flap Seal Bags, click here

Additional Information:

  • Flap seal bags come with an adhesive strip on the flap, which can be folded and sealed over the bag’s opening. The flap seal allows for items to be smaller than the height of the bag, as the flap seal can be folded past the opening of the bag if needed.
  • Video: Flap Seal Bags Explained
  • Bag sizes indicates the opening side as the first dimension
  • Bag dimensions have +/- 1/16" size tolerance
  • Custom printing and sizing available (Visit our customs page for more information)
More Information
Pack Quantity 100
Color Description Clear
Closure Type Flap Seal
Food Safe Yes
Fits Card Size A1 (4 Bar)
Thickness 1.6 mil
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