LCN 4000T Series Closer

This surface-mounted heavy-duty closer is designed to reliably control fire and smoke barrier doors.


The 4000T Series wall pocket heavy-duty closer is designed for use with an SEM 7850 wall magnet, to control the fire and smoke barrier doors with a maximum swing of 90°. The closer is UL and cUL listed with a standard arm for self-closing doors and boasts a 30-year warranty.

Features & Benefits
Body Construction
  • Cast iron cylinder with full-complement bearing
  • 1-1/2” diameter pinion journal
  • Double heat-treated steel pinion journal
Quality and Durability
  • All-weather fluid
  • Forged steel arm
  • 30-year warranty
  • Universal non-handed
  • Wood and machine screw pack
  • Sizes 3 or 4
  • Sized cylinders for interior fire/smoke doors to 4’0”
  • Meets ADA requirements
  • UL and cUL listed for self-closing doors
  • Tested and certified under ANSI/BHMA A156.4 Grade 1

LCN 4000T Series Closer

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