LCN 4021-3071 LH 689 STD Cylinder Assembly AL

LCN 4021-3071 LH 689 STD Cylinder Assembly AL is a robust solution tailored for high traffic environments. This left-hand standard cylinder assembly is an integral part of the trusted 4020 Series, recognized for its exceptional performance and ease of installation. Engineered to accommodate both interior doors up to 5'0" and exterior doors to 4'0", it ensures reliable functionality in various settings. The 4021 model features a non-sized cylinder, adjustable for interior doors up to 4'6" and exterior doors to 3'6", making it versatile for different applications. Designed for top jamb mounting on push side doors, it adheres to ADA requirements, ensuring accessibility. The closer is shipped with a regular arm, standard plastic cover, and self-reaming and tapping screws, facilitating a straightforward installation process. With a 30-year limited warranty and certification under ANSI Standard A156.4, grade one, users can trust its durability and performance. The unit is available in a matte silver finish (689/US28) and can be customized with an optional plated finish for metal components. Additionally, it offers an optional SRI primer for installations in corrosive conditions, making it a reliable choice for commercial use.

STD Cylinder Assembly AL

Standard Cylinder Assembly, Left Hand, Aluminum

The 4020 Series is designed specifically for high traffic applications.

LCN's 4020 Series is their best performing heavy duty closer that is known for its fast and accurate installation.

• Standard 4020 series closer is shipped with regular arm, standard plastic cover, and self reaming and tapping screws. See the Options tab for options.
• Sized cylinders for interior doors to 5’0” and exterior doors to 4’0”.
• Non-sized cylinder (4021) adjustable for interior doors to 4’6” and exterior doors to 3’6”.
• Closer mounts top jamb (push side), specify right or left swinging door.
• 4021 cylinder meets ADA requirements.
• Standard or optional custom powder coat finish.
• Optional plated finish on metal cover, arm and fasteners.
• Optional SRI primer for installations in corrosive conditions is available with powder coat only.
• The 4020 Series is UL and cUL listed with regular or fusible link arms for self-closing doors.
• Tested and certified under ANSI Standard A156.4, grade one.

Resources

• 4020 Series Surface Mounted Closers Cut Sheet
• LCN 4000 Series Catalog
• LCN 4010, 4020 & 4110 Door Closer w/ Fusible Link Arm Installation Guide
• LCN 4020 Series Cut Sheet
• LCN 4020 Series Installation Instructions
• LCN Closers & Auto Operators Installation Guide
• Von Duprin Finishes Chart