Alside is the US distribution arm of Associated Materials, LLC — a major building products company founded in 1947 by Jerome Kaufman, who invented the first residential baked-enamel aluminum siding. Headquartered in Cuyahoga Falls, Ohio, the company generates approximately $1.6 billion in annual revenue, employs over 4,400 people, and operates 11 manufacturing plants across the US and Canada. In 2022, private equity firm SVPGlobal acquired the company. Alside distributes through 125+ wholesale supply centers serving over 50,000 professional contractors.

Alside's window lineup includes the premium Mezzo series (with East and West Coast variants), the mid-range Fairfield 80 and Fairfield 70 series, and the Regency line. Patio doors are sold under the Promenade brand. The manufacturing side — branded internally as AMI (Associated Materials Innovations) — also produces Glasswing windows sold exclusively through DaBella home improvement installers, plus Alpine, Preservation, and Revere window lines for other channels. Beyond windows, Alside is primarily a cladding company: vinyl siding (Charter Oak, Sequoia Select), composite cladding (Ascend, Align), metal siding (Sierra Steel), and trim products.

Qualifying ENERGY STAR certified Alside windows can earn federal 25C tax credits of up to $600 for windows and skylights combined per year. The Mezzo and Fairfield 80 series with ClimaTech glass packages are designed to meet or exceed ENERGY STAR requirements across climate zones. Alside products are sold exclusively through professional contractors and authorized supply centers — not available at big box retailers.