Large Envelope Printing C4/C5 Specs + 100 MOQ from HK$0.5/pc + Same-Day Rush | ZprintPro
Quick Answer: Large envelope (C4/C5) printing 100 MOQ from $0.07 USD/pc. C4 (229×324mm flat A4) 500 pcs $0.10-0.19 USD/pc, C5 (162×229mm A4 folded) 500 pcs $0.06-0.09 USD/pc, DL (220×110mm A4 tri-fold) 500 pcs $0.045-0.07 USD/pc. ISO 269 international standard，2026-05-20 Shaoxing government procurement real pricing (6 envelope SKUs)，ZprintPro multi-year rush orders 14h turnaround，6 PM cut-off next-day noon SF Express，DHL 2-4 days cross-border. 5 use cases，4 FAQs，5 internal links，ZprintPro NAP (Shenzhen Cailong parent，Kwun Tong San Po Kong 6 PM cut-off，SF Express，DHL), 30s WhatsApp quote.
Hong Kong large envelope printing 2026 peak season runs September back-to-school through December Christmas, with rush inquiries up 35% MoM. When your client WhatsApps at 5 PM needing 200 C4 large envelopes for contracts delivered 9 AM next morning — where's fastest, how much, what cut-off? This guide uses ZprintPro 4,200 rush H1 2026 data，2026-05-20 Shaoxing government framework agreement public bidding (6 envelope SKU tier pricing)，Universal Postal Union (UPU) ISO 269 international standard to break down C4/C5/DL/C6 4 sizes，3 paper stocks，5 use cases，4 FAQs.
1. ISO 269 Standard: C4 / C5 / DL / C6 4 Sizes
Universal Postal Union (UPU)，ISO 269 international envelope sizing, 4 main formats，matched paper，use cases: ① C4 (229×324mm) #9 — fits flat A4 (no fold) for contracts / bids / certificates; ② C5 (162×229mm) #7 — fits A5 flat or A4 folded once for business letters / invitations / reports; ③ DL (220×110mm) #5 — world's most common business envelope, fits A4 tri-folded for bank statements / business letters / invoices; ④ C6 (114×162mm) #6 — fits A6 flat or A4 folded twice for greeting cards / invitations / wedding cards. C-series geometrically averaged with A-series paper, ensuring A4 fits C4 flat, C5 folded once, DL tri-folded.
| Size | Dimensions (mm) | Code | Fits paper | Use cases |
|---|---|---|---|---|
| C4 | 229 × 324 | #9 | A4 flat (no fold) | Contracts / bids / certificates / large docs |
| C5 | 162 × 229 | #7 | A5 flat / A4 once-folded | Business letters / invitations / reports |
| DL | 220 × 110 | #5 | A4 tri-fold | Bank statements / business mail |
| C6 | 114 × 162 | #6 | A6 flat / A4 twice-folded | Greeting cards / wedding invites |
2. 3 Paper Stocks: 80-120g Kraft / Offset / Coated
3 main envelope paper stocks，print process: ① 80-100g Kraft (eco-friendly) — virgin wood pulp kraft, vintage eco look, 100g C5 pcs HK$0.5/pc, 120g C4 pcs HK$0.8/pc, 120g offset mainstream commercial; ② 100-120g Offset (wood-free bond) (business standard) — flat smooth surface, CMYK 4-color print excellent for logo，address，company name; ③ 120-150g Coated paper (brand custom) — color print more vibrant, ideal for design-forward marketing mailers / premium brand envelopes. Print: 1-color black cheapest, CMYK 4-color offset +30%, Pantone spot +50%, gold foil，spot UV，window +80-120%. ZprintPro 80-120g kraft，CMYK 4-color，self-seal closure，window (optional), from HK$0.22/pc (100 MOQ).
3. 2026 Real Pricing 4 Tiers (C4/C5/DL × 100/500/1000/5000+ MOQ)
2026-05-20 Shaoxing government framework agreement public bid pricing (government procurement verified)，ZprintPro multi-year rush orders verified 4-tier pricing:
| Size | Paper | 100 pcs | 500 pcs | 1000 pcs | pcs |
|---|---|---|---|---|---|
| C4 #9 | 120g kraft | HK$2.0 | HK$1.5 | HK$1.3 | HK$0.8 |
| C5 #7 | 100g kraft | HK$1.0 | HK$0.7 | HK$0.6 | HK$0.5 |
| DL #5 | 80g kraft | HK$0.75 | HK$0.55 | HK$0.45 | HK$0.35 |
| C6 #6 | 80g kraft | HK$0.7 | HK$0.55 | HK$0.45 | HK$0.34 |
100 pcs small-batch C4 large envelope HK$2.0/pc (rush +30-50%), 500 pcs HK$1.5/pc, 1000 pcs HK$1.3/pc, pcs HK$0.8/pc, 5000+ pcs enjoy 25-30% volume discount. Rush premium 30-50% (ZprintPro 6 PM cut-off next-day noon delivery), cross-border DHL global 2-4 days. SF Express local free over HK$500.
4. 5 Use Cases: Business Letters / Contracts / Invites / Bills / Folded A4
Large envelope 5 use cases，recommended size: ① Business Letters (DL/C5) — company outbound mail, quotes, invoice copies, 80g offset，logo print cheapest; ② Contracts & Bids (C4) — legal contracts, tender documents, audit reports, flat A4 no fold, 120g kraft，gold foil logo professional; ③ Invitations (C5/C6) — wedding / event / summit invites, C5 with 120g art paper，foil，embossed premium; ④ Bank Statements (DL) — bank / insurance / credit card statements, DL with 80g offset，window, global standard; ⑤ Folded A4 Reports (C5) — quarterly / annual reports / school docs, C5 with 100g offset most common. ZprintPro covers all 5, 6 PM cut-off next-day noon delivery.
5. 5 Internal Links: Category / SKU / Rush / Calendar / Packaging
- Envelopes Category (C4/C5/DL/C6 full spec，window，kraft，color print)
- Business Envelopes Custom SKU (logo，address，contract words, $0.03-0.23 USD/pc, 100 MOQ)
- Same-Day Rush Printing Guide (6 PM cut-off next-day noon SF Express, multi-year rush orders 14h turnaround)
- 2027 Calendar Printing Guide (calendar gift box envelope set，mid-Sep deadline for Christmas)
- Packaging Box 2026 Pricing (envelope，gift box，calendar 3-piece packaging solution)
6. 4 FAQs: Size / Paper / MOQ / Rush
Q: Which envelope is most common — C4, C5 or DL?
A: DL (220×110mm) is the world's most universal business envelope, fits A4 tri-folded — 90% of bank statements and business letters use DL. C5 (162×229mm) fits A4 once-folded, preferred for business letters，invitations. C4 (229×324mm) fits A4 flat (no fold), for contracts / bids / certificates. C6 (114×162mm) for greeting cards / wedding invites. HK SMBs order 80% DL，C5.
Q: 100g or 120g kraft for large envelopes?
A: 100g kraft ($0.07 USD/pc ) suits light business mail, 120g kraft ($0.10 USD/pc ) for premium contract / bid. 80g offset cheapest (DL $0.045 USD/pc ) for mass statements, 150g coated ($0.13-0.19 USD/pc) for color-printed brand envelopes. Budget pick 80-100g, stiffness pick 120g, design brand pick 150g coated.
Q: Is 100 pcs the MOQ for large envelopes?
A: Yes, 100 pcs MOQ (ZprintPro business-envelopes SKU minQuantity=100), 500 pcs most cost-efficient (per-unit cost down 20-30%), pcs volume discount 15-20%. 50 pcs small-batch print shops may not accept — ask ahead. 5000+ pcs (brand bulk) 25-30% volume discount. Rush 100 MOQ +30-50% premium.
Q: What cut-off for same-day large envelope rush?
A: ZprintPro 6 PM cut-off, overnight print，6 AM pack，12 PM SF Express delivery, average 14h turnaround. 100 pcs C4 large envelope，rush premium 30-50% = HK$2.6-3.0/pc, total HK$260-300. Cross-border rush DHL global 2-4 days, US/EU/JP delivery. Walk-in Kwik Kopy fastest 4-6h but pickup-only; cross-border factory 5-7 days. ZprintPro is only channel with 6 PM cut-off，SF Express noon，WhatsApp 30s quote.
7. CTA，ZprintPro 30s WhatsApp Quote
WhatsApp 30s instant quote: Same-Day Rush Service Page or Business Envelopes Custom SKU. ZprintPro 6 PM cut-off next-day noon SF Express, DHL cross-border 2-4 days. 100 pcs C4 large envelope from HK$0.8/pc, 5000+ pcs 25-30% volume discount.
Author: ZprintPro Engineering Team, 15+ years in offset printing. Data sourced from: 2026-05-20 Shaoxing Printing Service Framework Agreement public bid，Universal Postal Union UPU ISO 269 international standard，ZprintPro multi-year rush orders H1 2026 internal data. Disclaimer: Prices are for reference only, real-time WhatsApp quote prevails.
