4020T Series Door Closer - Top Jamb (Pull Side) Mounting

Product Code: 4023T.US28 & 4024T.US28
4020T Series Door Closer - Top Jamb (Pull Side) Mounting
  • Description and Uses
  • Installation Sheets & Templates

4020T Series Door Closer - Top Jamb (Pull Side) Mounting

The 4020T Smoothee® is LCN’s best performing heavy duty closer designed specifically for institutional and other rugged high traffic applications.

Features and Benefits

  • Ten Million Cycles
  • Cast Iron
  • Forged Steel Main Arm
  • Double Heat Treated Steel Pinion
  • All Weather Fluid
  • LCN® Fast™ Power Adjust
  • Fast & Accurate Installation

UK Fire Certification in accordance with BS EN 1634-1:2014 (timber) - 120 mins
UK Fire Certification in accordance with BS EN 1634-1:2014 (steel) - 60 mins
WFRC No. 142058 - Issue 4. Valid Until 1st December 2019

EN 1154: 1996 + A1: 2002/AC:2006

CE Certified. Certification applies to Top Jamb (Pull Side) Mounting Only (4023T)


  • Standard 4020T series closer shipped with standard arm, standard track, track roller, plastic cover and wood & machine screw pack
  • Sized cylinders 4023 for interior doors to 965mm & 4024 for interior doors only to 1220mm
  • 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
  • Handed for clockwise (left hand) and anti-clockwise (right hand) closing doors
  • Surface Mounting
    For interior doors. Single acting cylinder on head frame. Exposed arm and track to door top rail
  • Maximum Opening
    Butt hinge template allows 180° with standard track arm, limited to 100° when optional bumper is installed
  • Hold Open Points 80°, 85°, 90°, 95° & 100° dictated by the hold open clip location in the track. HO Clip is optional
  • Consult Relcross for all pivot mounted installations
  • Butt Hinges should not exceed 127mm in width
  • Auxiliary Stop is recommended
  • Reveal should not exceed 3mm for standard arm
  • Head Frame minimum 98mm (44mm with 4020T-18 plate)
  • Clearance minimum 38mm behind the door for 90° or 180° installations
  • Standard Finish - US28 powder coated silver

Mounting Options & Arms

4020T Series - Top Jamb (Pull Side) Mounting

Standard Track Arm - 4020T-3077T
Handed arm. Roller not included with arm

Cylinder - 4010T-3071
Standard, handed cast iron cylinder assembly

Cover - 4020-72
Standard, handed plastic cover

Lead Lined Cover - 4020-72LL
Optional handed plastic cover

Metal Cover - 4020-72MC
Optional, handed cover. Required for plated finishes and custom powder coat finishes

How to Specify or Order

4023T Heavy Duty Track Arm Door Closer (Handed)
4024T Heavy Duty Track Arm Door Closer (Handed)


US28 - Powder Coated Silver

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Relcross Ltd
Hambleton Avenue
SN10 2RT

t: 01380 729 600

w: www.relcross.co.uk
e: j.livesey@relcross.co.uk