Cotton duck also simply duck, sometimes duck cloth or duck canvas, commonly called "canvas

Canvas

Canvas is an extremely heavy-duty plain-woven fabric used for making sails, tents, marquees, backpacks, and other items for which sturdiness is required. It is also popularly used by artists as a painting surface, typically stretched across a wooden frame...

" outside the textile industry

Textile industry

The textile industry is primarily concerned with the production of yarn, and cloth and the subsequent design or manufacture of clothing and their distribution. The raw material may be natural, or synthetic using products of the chemical industry....

, is a heavy, plain woven

Plain weave

Plain weave is the most basic of three fundamental types of textile weaves . It is strong and hard-wearing, used for fashion and furnishing fabrics....

 cotton

Cotton

Cotton is a soft, fluffy staple fiber that grows in a boll, or protective capsule, around the seeds of cotton plants of the genus Gossypium. The fiber is almost pure cellulose. The botanical purpose of cotton fiber is to aid in seed dispersal....

 fabric

Textile

A textile or cloth is a flexible woven material consisting of a network of natural or artificial fibres often referred to as thread or yarn. Yarn is produced by spinning raw fibres of wool, flax, cotton, or other material to produce long strands...

. There is also linen

Linen

Linen is a textile made from the fibers of the flax plant, Linum usitatissimum. Linen is labor-intensive to manufacture, but when it is made into garments, it is valued for its exceptional coolness and freshness in hot weather....

 duck, which is less often used.

Duck is used in a wide range of applications, from sneakers to over tent

Tent

A tent is a shelter consisting of sheets of fabric or other material draped over or attached to a frame of poles or attached to a supporting rope. While smaller tents may be free-standing or attached to the ground, large tents are usually anchored using guy ropes tied to stakes or tent pegs...

s to sandbag

Sandbag

A sandbag is a sack made of hessian/burlap, polypropylene or other materials that is filled with sand or soil and used for such purposes as flood control, military fortification, shielding glass windows in war zones and ballast....

s.

Duck fabric is woven with two yarns together in the warp and a single yarn in the weft.

Duck cloth is commonly used for the 6×6 inch corn-filled bags for the tossing game cornhole

Cornhole

Cornhole can refer to:*Cornhole, a game also known as Corn Toss or Bean Bag Toss.*A slang term for anus or anal sex...

.

Classification

Duck is classified according to weight in a numerical system, with grade 1 the heaviest and grade 12 the lightest variety. Besides this, traditional names exist, which are rarely used today.

A numbering system is used to describe the various weights of duck cloth, based on the weight of a 36×22-inch piece. Weights below 19 ounces are called numbered duck. The grade of numbered duck refers to the number of ounces subtracted from 19 for a 36×22-inch piece of fabric. For example, a piece of #8 numbered duck with dimensions of 36"×22" weighs 11 ounces (19 − 8 = 11); those above 19 ounces are called naught duck.

Numbered duck is nominally made in weights from 1 to 12, but numbers 7, 9, and 11 are no longer used. Some typical uses of various grades (with weights in ounces) are:

• #1 (18 oz): hammocks, cots, sandbags
• #2 (17 oz): hatch paulins
• #3 (16 oz): heavy-duty bags
• #4 (15 oz): sea bags
• #5 (14 oz): heavy work clothes
• #6 (13 oz): large boat covers, heavy work clothes
• #8 (11 oz): work clothes, clothes bags
• #10 (9 oz): work clothes, shower curtains
• #12 (7 oz): light clothes