A21I Silver Automatic, Adjustable Spring Door Closer Keep doors closing smoothly, safely, and reliably with the A21I automatic door closer. Engineered for straightforward installation and simple adjustment, the A21I uses a springdriven mechanism and a sleek silver finish to deliver consistent performance without complicated controls. Key benefits Prevents slamming and uncontrolled door movement to reduce noise, wear, and injury risk. Automatic operation ensures doors close reliably after use, improving building security and climate control. Adjustable spring tension lets you set the closing force to suit door weight and traffic patterns for smoother operation. What makes it useful Simple, springdriven automatic closing that does not require external power. Adjustable settings provide flexible control over closing speed and force to match different door conditions. Clean silver finish gives a neutral, professional appearance that complements most interiors. Attributes at a glance Model: A21I Finish: Silver Mechanism: Automatic, adjustable spring Functionality: Automatic closing with adjustable tension Material: Metal housing with springdriven internal components and durable finish Performance: Designed for consistent, repeatable closing action; adjustable to accommodate varying door weights and usage Compatibility and installation Designed to work with common door applications; suitable where an automatic spring closer is required. Compact, surfacemounted style fits many standard door setups and can be adjusted on site to meet performance needs. Installation requires standard hardware and basic tools; alignment and tension adjustments are made using accessible adjustment points. Typical use cases Commercial offices and meeting rooms where controlled closing improves privacy and reduces noise. Apartment and multifamily building entry doors to maintain security and prevent doors from being left open. Retail or service restrooms and utility rooms where reliable automatic closing is needed without electrical connections. Why choose the A21I The A21I combines automatic, springdriven operation with adjustable tension and a neutral silver finish to deliver a practical doorclosing solution. It is well suited to locations that need reliable, power door control with straightforward onsite adjustment.