Description
Introducing our C4 “Tariff Beater” board backed envelopes, precision engineered to skirt postal rate thresholds while delivering maximum protection. These hard backed envelopes offer robust rigidity and postal efficiency—packed in bulk quantities to meet the demands of businesses, printers, e-commerce fulfilment, and high volume mailers.
Key Features & Specifications
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Outer dimensions: 324 × 229 mm (approx 12.75″ × 9.0″) — fits A4 sheets without folding
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Construction: Rigid backing board (thick, stiff core) paired with premium paper shell
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Closure: Peel & seal flap for fast, secure sealing
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“Tariff Beater” design: Sized to maximise content while staying within favourable postage bands
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Bulk options: Available in large packs (e.g. 125, 250, 500, 1,000+) to reduce unit cost
What Fits Inside & Use Cases
The generous size and board structure make these envelopes ideal for mailing:
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Flat A4 documents (e.g. legal papers, reports, brochures, portfolios)
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Artwork, prints, maps, and drawings up to A4
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Certificates, diplomas, menus, presentation sheets
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Photographs or mounted prints (thin mounts)
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Magazines, booklets, catalogs (if thickness allows)
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Marketing packs, sample sheets, promotional materials
Thanks to the rigid board backing, contents remain flat, unfettered by bending, creasing, or postal handling damage—even with heavier or slightly bulky inserts.
Why Order in Bulk?
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Reduced cost per envelope — bulk orders dramatically cut unit price
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Reliable inventory for frequent mail runs — never run out mid-campaign
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Uniform quality & consistency — each envelope meets the same rigid standard
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Fulfillment efficiency — easier packing, forecasting, and distribution
Benefits That Matter
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Superior protection: The stiff board backing resists bending and offers premium protection in transit.
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Professional presentation: Recipients receive flat, pristine items — enhancing your business image.
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Postal-savvy format: The “Tariff Beater” dimensions are tailored to help you stay within advantageous postage rate bands.
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Versatile usage: Perfect for marketing packs, print materials, photos, and documents needing flat presentation.
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Stackable & storage efficient: Flat, rigid design makes them easy to store and ship in bulk.




