Export Certified Lumber

As the leading Chicago-based manufacturer of export certified lumber; Industrial Wholesale & Lumber is a member in good standing with Timber Products Inspection’s Heat Treatment (HT) Program, which is accredited by the American Lumber Standard Committee, Inc. (ALSC). Our facility is in compliance with the International Plant Protection Committee’s ISPM-15: Guidelines for Regulating Wood Packaging Material in International Trade.


This compliance ensures that IWL is doing its part with our Chicago export certified lumber to eliminate the potential pathways and spread of pests through all our wood packaging materials in Chicago and around the world.


For an explanation of the export certified lumber marks needed for exporting crates, pallets and skids, as well as country-specific information, please contact your Industrial & Wholesale Lumber representative or visit the Timber Products Inspection website to review the HT Marks Descriptions.

The following sites provide a background for the guidelines we follow and an industry-specific glossary to aid with commonly used export certified lumber terminology: