Cline's 100BE Flush Aluminum Series Door was the product that launched the company. Being the oldest manufacturer of flush aluminum doors, Cline has spent over 50 years perfecting this product. The 100BE series door is a staple product for water treatment facilities, offshore oil-rigs, military housing, government buildings, and hospitals. The 100BE Series offers strength, flexibility of design, and endurance. Any environment where the conditions are tough, chemically or physically, the 100BE stands up to the challenge.