# Envelope set sigel DU257 DIN Lang, gummed, white paper 90 g/m²

**URL:** https://aio.lv/en/product--sigel-du257--11042448
**Data updated:** 2026-02-13 15:48 (EET)
**Category:** Stationery Accessories
**Manufacturer:** sigel
**Manufacturer code:** DU257
**EAN:** 4004360795107
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 28.49 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 23.55 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--sigel-du257--11042448

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.07.2026 | free |
| Pickup points | 29.07.2026 | 1.89 EUR |
| Courier delivery to door | 29.07.2026 | 4.99 EUR |

## Summary description

Set of sigel DU257 envelopes in DIN Lang format, made from white paper with a weight of 90 g/m². These gummed (water-activated) envelopes are suitable for mailing letters, invoices and documents in a standard long format. They provide a secure seal after moistening and are intended for everyday office and private mailing needs.

## Long description

Set of sigel DU257 envelopes in DIN Lang format, produced from white paper with a weight of 90 g/m². These gummed (water-activated) envelopes are designed for mailing letters, invoices and documents in a standard long format. The gummed flap creates a secure seal after moistening, making the envelopes suitable for everyday office and private mailing needs.
Advantages
These DIN Lang envelopes offer consistent paper weight for a professional feel and reliable handling. The water-activated gum closure ensures a tight seal once moistened, reducing the risk of accidental opening during transit. The white surface provides a neutral, printable area for addresses, postage, and labels, and the paper weight balances durability with economical use.
Suitable for
 Mailing letters and correspondence in long format
 Sending invoices, statements and delivery notes
 Enclosing folded A4 documents and forms
 Everyday office and private postal use
Key specifications
 Format: DIN Lang (long envelope size)
 Material: white paper
 Paper weight: 90 g/m²
 Closure type: gummed (water-activated) flap
 Surface: printable for ink and label application
How to use
Insert the document folded to fit DIN Lang format, align contents so addresses or window areas are visible if applicable, then moisten the gummed flap evenly and press firmly along the flap to create the seal. Allow a short drying time before stacking or posting to ensure the adhesive bonds fully. For best results when printing addresses directly on the envelope, test print on a single envelope first to confirm feed and ink compatibility with your printer.
Usage recommendations
Store envelopes flat in a cool, dry place to preserve the adhesive properties of the gummed flap. Avoid prolonged exposure to heat or humidity. When using automated inserting or sealing equipment, confirm compatibility with 90 g/m² paper weight and gummed closures to prevent jams or incomplete seals.

## FAQ

### How much does the Envelope set sigel DU257 DIN Lang cost, and is it available for purchase?

The price is 28.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 24.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All sigel products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized sigel service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11042448/61707971_large.webp