Number 4 Heavy Cotton Fabric | Sapphire | 24 ounces – 60″ wide DISCONTINUED

$10.95 / linear yard

In stock

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Uses for this 24 ounces per square yard cotton duck dyed Sapphire include: Floor Cloths, Place Mats, tool bags, pouches, boat totes, conveyor belting, canvas carts, industrial bins, line bags, and many more.

Note: All Canvas Material is sold by the linear yard. Most orders are shipped folded; certain items 10 yards or more will be shipped on a tube. If you need your order to ship on a tube, please click the box on the cart page. Primed artist canvas is the only item shipped on a tube regardless of length.

Volume Breaks: 50-99 Yards 5% Off, 100 yards 10% Off


#4 Heavy Cotton Fabric

Did you know that one type of 100% cotton fabric could have so many variations? Reminder: Cotton Duck Canvas is sometimes referred to by its weight (such as 10 oz duck) or sometimes it’s assigned a number, such as this #4 duck. This is known as, unsurprisingly, a ‘number’ duck.

The number does indicate the weight, but not directly. #4 duck doesn’t weigh four ounces. It actually weighs 24 ounces per square yard. The lower the number on a number duck, the heavier the fabric will be. Our #4 cotton duck is American woven and dyed in the USA. It is heavy and rather stiff and it is undyed and unbleached.

You can choose the perfect cotton duck canvas for any project by making sure you have the right type for your needs. See below for more uses.


Weight: Width: Content: Coating: Finish: Yarn: Weave:
 24 oz/sq yd 60 in. 100% Cotton None Dyed Sapphire Plied Plain

Other features: Plied yarns, heavy-weight, high tensile and tear strengths. 


  • Floor Cloths
  • Place Mats
  • Tool bags
  • Pouches
  • Boat totes
  • Conveyor belting
  • Canvas carts
  • Industrial bins
  • Line bags
  • Many more!

Discover all our #4 cotton duck fabrics here.

Learn more about canvas fabric on Wikipedia.

*Fabrics are mostly water and flame resistant, but sometimes water and flameproof depending on how long the fabric is exposed to those conditions*

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