LCN 4020 Series

Specifications

• Standard 4020 series closer is shipped with regular arm, standard plastic cover, and self reaming and tapping screws. See 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 1.

Mounting Details

TOP JAMB (PUSH SIDE): Maximum opening can be templated for 100°:
A = 6” (152 mm); B = 12 3/8” (314 mm). Maximum opening to 140°: A = 4”
(102 mm); B = 10 3/8” (264 mm). Maximum opening to 180°: A = 2” (51 mm); B = 8 3/8” (213 mm). Hold-open points up to maximum opening or 140°, whichever is less, for hold-open or fusible link arm. For hold-open beyond 140°, use 4110 Series closer.

• Butt Hinges should not exceed 5” (127 mm) in width.
• Auxiliary Stop is recommended at hold-open point or where the door cannot swing 180°.
• Reveal of 2 9/16” (65 mm) allows 180° opening with regular arm .
• 4-13/16” (122 mm) allows up to 140° opening with regular arm.
• 8” (203 mm) allows up to 140° opening with LONG ARM where standard rod and shoe is replaced with optional LONG ROD and SHOE (4020-79LR).
• Head Frame less than 3-7/16” (87 mm) requires PLATE, 4020-18.
  Use PLATE, 4020-18G for flush ceiling condition. Either plate requires 1-3/4” (44 mm) minimum.
• Top Rail requires minimum 1-1/2” (38 mm).
• Closer on 4020-18 plate requires 2” (51 mm) minimum.
• Closer on 4020-18G plate requires 2-3/4” (70 mm) minimum.
• Delayed Action Add suffix “DEL” to selected cylinder (eg. 4024 DEL).
• Not available with 4026 cylinder.
• Delays closing from maximum opening to approximately 75°.
• Delay time adjustable up to approximately one minute.

LCN Finishes

STANDARD POWDER COATED FINISH: LCN door closers feature the finest, state-of-the-art metal finishing process available. LCN powder coating provides superior protection against the effects of weathering and is an environmentally friendly process. The high quality, chip resistant finish is far superior to any previously offered. Corrosion resistance surpasses 100 hours salt spray testing (four times the industry standard). Non-metallic components also provide the same high resistance to the effects of the elements. All LCN products must be shipped with a finish.

OPTIONAL CUSTOM POWDER COATED FINISHES: LCN offers optional custom powder coat colors to compliment special installations. This provides a custom appearance and all the corrosion resistance of standard powder coated finishes at a nominal additional cost. See Downloads tab for available custom colors.

OPTIONAL PLATED FINISHES: Visible components such as covers, arms, fasteners, and finish plates are plated to match the selected finish. Surface mounted tracks are powder coated to complement the plated finish. Hidden assemblies such as cylinders, tracks, and mounting plates are supplied with a powder coated finish.

SPECIAL RUST INHIBITING (SRI) PROCESS: For installations where a higher level of protection against weathering, or the effects of a potentially corrosive atmosphere is required, LCN offers a special rust inhibiting (SRI) process. Ferrous metal components receive an SRI pretreatment and a powder finish coat in your choice of either an LCN standard color or optional extra charge custom colors. Closers treated with the SRI process exceed the 100 hour protection level available with standard LCN powder coated finishes.