Steel wire, also known as ducting, is a type of plastic, fiberglass or glass that’s often used to make insulation and reinforcement in building construction and construction products.
When steel wire is applied to a concrete or brick, it’s called a galvanized steel.
The term “brander” comes from the steel wire itself.
If a brander wire is used to fill a void in concrete, the concrete is called a branch wire.
When the brander is used for insulation in a concrete structure, the insulation is called an attic brander.
This article originally appeared on New York magazine.
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