Surface mounted closer

4020 Series

Overview

The 4020 is LCN's best performing heavy duty closer designed specifically for institutional and other rugged high traffic applications.

Cylinder

4021(6)-3071

Cast iron cylinder assembly

Sizing Handing

Adjustable 1-5 or sized 6 Handed

4021 (adjustable from size 1 to 5)

4026 (DEL not available)

Available cylinder options

DEL Delayed action cylinder

Mounting

Top jamb (push side)

Finishes Covers

Powder coat fi nishes

689 Aluminum

690 Statuary Bronze

691 Light Bronze

693 Black

695 Dark Bronze

696 Brass

150+ additional custom colors available using the RAL numbering system

Metal plated fi nishes

632

Bright Brass

633 Satin Brass

639 Satin Bronze

643e Satin Bronze, Blackened

646 Satin Nickel

651 Bright Chrome

652 Satin Chrome

Available fi nish options

MTLPC

Brite metallic: Custom powder coat fi nish, which resembles that of US26 or US26D plated fi nish.

SRI

For installations where a higher level of protection against weather conditions, 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 standard powder coat fi nish of your choice, or a custom powder coat fi nish for a nominal additional cost. Closers treated with the SRI process exceed the 100 hour protection level available with standard LCN powder coated fi nishes.

Standard cover

4020-72 Plastic cover

• Handed
• Standard

Optional covers

4020-72MC Metal cover

• Handed
• Required for plated fi nishes and custom powder coat fi nishes
• Optional

Arms

4020-3077 Regular arm

Non-handed

4020-3077L

Long arm

• Non-handed
• Includes 4020-79LR for deep reveals.
• Optional

4020-3049 Hold-open

• Handed
• Provides hold-open function, adjustable at elbow
• 5-3/4˝ (146 mm) maximum reveal, 140° hold open
• Optional

4020-3049FL Fusible link

• Handed
• Releases hold-open function, adjustable at shoe, when exposed to temperatures above 165° F
• 3-7/8˝ (98 mm) maximum reveal
• Optional
• NOTE: Check local codes before specifying FL arms. NOT A life safety product!

Installation accessories

4020-18 Plate

• Required where head frame is less than 3-7/16˝ (87 mm)
• Requires minimum 1-3/4˝ (44 mm) minimum head frame and 2˝ (51 mm) top rail 3-7/8˝ (98 mm) maximum reveal

4020-18G Plate

• For fl ush ceiling condition
• Requires minimum 1-3/4˝ (44 mm) minimum head frame and 2-3/4˝ (70 mm) top rail

Fasteners

Self-reaming and tapping screws included standard

Fastener pack options

TBSRT	TB1 with self-reaming and tapping screws
WMS	Wood and machine screw
TBWMS	TB1 , wood and machine screw
TORX	TORX machine screw
TBTORX	TB1 and TORX machine screw

₁ Specify door thickness if other than 1-3/4˝

Dimensions and mounting

Top jamb (push side) mounting

Specifications

Accessibility	Available with less than 5.0 lbs. opening force on 36˝ door
Certifications/ approvals	ƒ Grade 1 - ANSI A156.4 ƒ UL 10C ƒ Meets BAA - Buy American Act
Degree of operation	Hinge (pull) side Max opening: 180° Hold open: 140°
Environmental conditions	ƒ Approved for interior use ƒ Approved for exterior use (SRI coated only) ƒ LCN's standard all weather fluid performs to temperature ranges from 120°F (49°C) to -30°F (-35°C) ƒ LCN's powder coat finish surpasses 100 hours of salt spray which is over four times the ANSI standard for corrosion resistance.
Warranty	30 years
Standard features	ƒ Cast iron body ƒ Full complement bearing ƒ 1-1/2˝ diameter piston ƒ 11/16˝ diameter double heat treated pinion journal