---
product_id: 643729644
title: "Sirio Ultra Black Cardstock from Cardstock Warehouse 8.5\" x 11\" - 104# Cover - 25 Sheets"
brand: "cardstock warehouse paper company"
price: "€ 100.35"
currency: EUR
in_stock: true
url: https://www.desertcart.gr/products/643729644-sirio-ultra-black-cardstock-from-cardstock-warehouse-8-5-x
store_origin: GR
region: Greece
---

# uncoated surface for vivid white ink & mixed media 104# ultra-dense cover weight carbon black-free, oxidation-resistant Sirio Ultra Black Cardstock from Cardstock Warehouse 8.5" x 11" - 104# Cover - 25 Sheets

**Brand:** cardstock warehouse paper company
**Price:** € 100.35
**Availability:** ✅ In Stock

## Summary

> 🖤 Elevate your craft with the black that means business.

## Quick Answers

- **What is this?** Sirio Ultra Black Cardstock from Cardstock Warehouse 8.5" x 11" - 104# Cover - 25 Sheets by cardstock warehouse paper company
- **How much does it cost?** € 100.35 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/643729644-sirio-ultra-black-cardstock-from-cardstock-warehouse-8-5-x)

## Best For

- cardstock warehouse paper company enthusiasts

## Why This Product

- Trusted cardstock warehouse paper company brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Fade-Resistant Innovation:** Carbon black-free pulp ensures your projects stay vibrant and fresh.
- • **Premium 104# Cover Weight:** Heavyweight cardstock that feels as substantial as your ideas.
- • **Versatile Artistic Canvas:** Uncoated finish perfectly absorbs white ink and mixed media colors.
- • **Unmatched Ultra Black Intensity:** Experience a black so deep, it redefines sophistication.
- • **Perfect for Professional Creations:** Ideal for invitations, announcements, and standout cardmaking.

## Overview

Sirio Ultra Black Cardstock offers a premium 8.5” x 11” 104# cover weight with an innovative carbon black-free pulp that prevents oxidation and ensures extreme light-fastness. Its uncoated surface uniquely accepts white ink and mixed media, making it the ultimate choice for professional-grade invitations, announcements, and creative projects.

## Description

Sirio Ultra Black Cardstock from Cardstock Warehouse 8.5" x 11" - 104# Cover - 25 Sheets

## Features

- A unique black cardstock - intense black like no other - It's the new black redefined for performance. An innovative composition of pulp processed without carbon black, prevents oxidation and is extremely light-fast. Uncoated surface takes white ink and mixed media color applications like no other. Why do black when you can do Ultra Black.
- Premium quality, uncoated finish
- 8.5” x 11” heavy weight 104 lb. cover, 25 sheets
- Perfect for card backs, cardmaking, announcements, invitations and craft projects

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Cardstock Warehouse Paper Company, Inc. |
| Country of Origin | USA |
| Item model number | CWUB-SIRIOULTRA BLACK105-8511-25PK |
| ASIN | B07QNMG9QC |

## Product Details

- **Material:** Paper
- **Brand:** Cardstock Warehouse Paper Company
- **Colour:** White,Black
- **Size:** 8.5 x 11 inches
- **Item Weight:** 14.75 Ounces

## Images

![Sirio Ultra Black Cardstock from Cardstock Warehouse 8.5" x 11" - 104# Cover - 25 Sheets - Image 1](https://m.media-amazon.com/images/I/61AHKsNAX2L.jpg)
![Sirio Ultra Black Cardstock from Cardstock Warehouse 8.5" x 11" - 104# Cover - 25 Sheets - Image 2](https://m.media-amazon.com/images/I/41YdyB80kjL.jpg)
![Sirio Ultra Black Cardstock from Cardstock Warehouse 8.5" x 11" - 104# Cover - 25 Sheets - Image 3](https://m.media-amazon.com/images/I/719MskXul7L.jpg)
![Sirio Ultra Black Cardstock from Cardstock Warehouse 8.5" x 11" - 104# Cover - 25 Sheets - Image 4](https://m.media-amazon.com/images/I/81FWGT3Xt-L.jpg)
![Sirio Ultra Black Cardstock from Cardstock Warehouse 8.5" x 11" - 104# Cover - 25 Sheets - Image 5](https://m.media-amazon.com/images/I/61peru+dNEL.jpg)

## Questions & Answers

**Q: what gsm is this please?**
A: This paper is 280 gsm.

**Q: I am looking for an ultra black matt paper for taking pictures of miniatures. Is this paper matt or glossy?**
A: Hello, This paper has a matt finish, and while it is considered ultra black in terms of cardstock paper on the market, we know from experience that it is not as black as a black background made specifically for photography. We recommend that you purchase a black background made specifically for photography if that is what you would be using it for.

**Q: Does this cardstock have a smooth texture?**
A: Hello, Yes this is a satin-smooth finish cardstock paper made without carbon black and is ph neutral.

## Frequently Bought Together

- Cardstock Warehouse Sirio Ultra Black - 8.5 x 11" - 104 Lb. / 280 Gsm Premium Cardstock Paper - 25 Sheets
- Cardstock Warehouse Pop-Tone Pink Lemonade Cardstock Paper – 25 Sheets, 8.5 x 11" - 100 lb / 270 GSM Premium Pink Card Stock for Die-cutting, Crafts, Printing, Card Making and DIY Projects
- Cardstock Warehouse Stardream Silver Cardstock Paper - 25 Sheets, 8.5 x 11" – 105 lb / 284 GSM Premium Metallic Silver Card Stock for High-end Printing, Card Making, Die-cutting & DIY Projects

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**Shop now:** [https://www.desertcart.gr/products/643729644-sirio-ultra-black-cardstock-from-cardstock-warehouse-8-5-x](https://www.desertcart.gr/products/643729644-sirio-ultra-black-cardstock-from-cardstock-warehouse-8-5-x)

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-23*