Heavy-duty Commercial Lockset


CLEARANCE – Limited Quantities Remaining

Classic toughness. The Yale B5408LN Heavy-duty Commercial Lockset provides reliable access to your industrial, commercial and institutional doors. Featuring a free-wheeling lever mechanism and deadlocking latchbolt, this lockset cuts no corners on safety or performance!

In Stock - Limited Supply

SKU: B5408LN
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Need assistance or have questions? Call our Cabinet Product Specialists at 877-439-5377 for more information and ordering assistance. We’re here to help!

Need assistance or have questions? Call our Commercial Product Specialists at 877-439-5377 for more information and ordering assistance. We’re here to help!

  • Heavy-duty commercial lockset
  • Classroom function – outside lever locks and unlocks with key, inside lever always unlocks for quick egress
  • Deadlocking latchbolt
  • Free Wheeling lever mechanism allows lever to move up and down when locked
  • Less core model
  • Yale 6 PIN keyway prep
  • Augusta lever
  • Satin Chrome finish
  • Non-handed
  • ANSI A156.2, Series 4000 Grade 1
  • UL/cUL fire-rated up to 3 hours
  • Windstorm certified (refer to local codes)

3 1/2 (H) x 5 7/16 (W) x 3 3/64 (D) in.

Door Thickness Minimum

1 3/4 in.

Door Thickness Maximum

2 in.

Door Handing


Door Opening



2 3/4 in.




Assa Abloy


Satin Chrome

Lever Design


ANSI Rating

A156.2, Grade 1 (Best)

BHMA Rating

Grade 1 (Best)

Fire Rating

UL 3 hr. Latch

Latch Bolt

1/2 in. throw

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Customer Questions & Answers

  1. Q Will a Best interchangeable core work in this lockset? answer now
    Asked by Robert Dees on August 11, 2023 11:08 AM

    Yes, this lock is compatible with Best SFIC's

  2. Q What cylinder is used for this? answer now
    Asked by todd on December 10, 2022 11:28 AM

    This model is designed to be used with a Yale 6-pin LFIC

  3. A

    This model is fire rated for 3 hours and will always open from the interior side. The outside handle will only open the door with the use of the physical key. 

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