HS Code for Cross laminated timber

Cross-laminated timber (CLT) is classified under HS code 4418.82. This classification is part of Chapter 44, which covers wood and articles of wood. Heading 4418 specifically addresses builders' joinery and carpentry of wood, including cellular wood panels and assembled flooring panels. Within this heading, the 80-series subheadings were updated in recent years to specifically identify engineered structural timber products. CLT is defined by its unique construction: layers of solid-sawn lumber (usually three, five, or seven) oriented at right angles to one another and bonded with structural adhesives. This cross-orientation provides the material with high structural rigidity and stability in two directions, making it suitable for load-bearing walls, floors, and roofs in mass timber buildings. The classification under 4418.82 is mandatory because it is an engineered structural product, distinguishing it from simple plywood or standard laminated wood.

Products Included

• Multi-layer cross-laminated timber panels
• CLT wall and floor elements
• Prefabricated CLT structural components
• X-lam (Cross-laminated) structural boards
• Mass timber panels for high-rise construction

Common Misclassification

CLT is often confused with HS code 4412, which covers plywood, veneered panels, and similar laminated wood. While both involve layers of wood, 4412 is generally for decorative or non-structural panels, whereas 4418.82 is specifically for engineered structural carpentry. Another common misclassification is HS code 4418.81, which is reserved for Glue-laminated timber (Glulam). Glulam differs from CLT because its laminations run parallel to the length of the member, whereas CLT layers are cross-oriented. Using the general code 4418.99 for "other" builders' joinery is also an error now that specific codes for engineered timber exist.

FAQ

What is the HS code for Cross laminated timber?

The specific HS code for cross-laminated timber (CLT) is 4418.82.

Is CLT classified the same as standard plywood?

No, CLT is classified under 4418.82 as engineered structural timber, while plywood is classified under heading 4412. The distinction lies in the structural application and the thickness of the wood layers.