Montclair Menthol Dark Green King Box cigarettes are sold by Costco in a carton of 6 master case units. Montclair is manufactured by ITG Brands, LLC, one of the largest tobacco companies in the United States and a subsidiary of Imperial Brands.

Montclair is one of America's classic cigarette brands, offering a premium-tasting smoking experience at a value price point. The Menthol Dark Green variety delivers a cool menthol flavor in a King Size format, packaged in the brand's signature dark green box. As of 2025, ITG Brands acquired exclusive rights to manufacture and sell the Montclair brand from Commonwealth Brands.