K.N. Crowder Mfg Inc (KNC) has always made a conscious effort to reduce the environmental impact of our production facilities and products. Recycled content and regionally sourced materials are standard objectives in our operation as well as the recycling of materials during our manufacturing process.

KNC has begun work on obtaining Health Product Declarations (HPDs) and Air Quality certification for our gasketing systems products, including weatherstrip, astragals, automatic door bottoms and thresholds. We have reached out to our major suppliers for assistance with materials data and are working with a certified consultant/Program Operator to assist with the information collection and certification process. Using permanently installed products with HPDs can help projects achieve a LEED certification under LEED v4 and v4.1 (Beta).

Many of our aluminum products are produced with 6000 series aluminum billet, produced in Canada and eligible for LEED v4 compliance. The extruded aluminum material is 100% recyclable and new, environmentally friendly anodizing processes are also being used on our extrusions to ensure our product is as sustainable as possible. Steel and stainless steel materials are also sourced with recycled content where possible.

Recycled PVC makes up a portion of our vinyl extrusions and our molded nylon components also contain recycled material. Many of our silicone and neoprene gaskets also meet Greenguard Gold Certification for low chemical emissions. KNC also purchases in bulk and from local suppliers to minimize the environmental impact of transportation of raw materials.

Download PDF LEED Letter

KNC proudly reuses packaging when possible and recycles materials when not. Standard ‘brown’ cardboard is used for packaging. For larger projects, products are bulk packaged, thereby often reducing cardboard consumption by 75% or more.

K.N. Crowder products are manufactured, packaged and shipped from our Factory located at 1220 Burloak Drive, Burlington, Ontario, Canada.

Please contact me if you have any questions.


Jeremy Crowder
Vice President
[email protected]
Phone: 905-315-9788 • Toll Free Fax: 1-800-567-0123
Toll Free Phone: 1-866-999-1KNC (1562)