User Guide
LBF SERIES BI-FOLD GLASS DOORS
INSTALLATION INSTRUCTIONS FOR LBF SERIES BI-FOLD GLASS DOORS  
36LBF / LBF-BB •  38LBF / LBF-BB / LBF-BS •  42LBF / LBF-BB •  43LBF / LBF-BB / LBF-BS •  50LBF / LBF-BB
P/N 504267M
Rev. F, 09/2010
HEARTH PRODUCTS
KITS AND ACCESSORIES
THIS KIT IS TO BE INSTALLED BY A  QUALI FIED 
 SERVICE TECHNICIAN OR OTHER QUALIFIED AGENCY 
IN  ACCORDANCE WITH THE MANUFAC TURER’S 
 INSTRUCTIONS AND ALL CODES AND REQUIREMENTS OF 
THE AUTHORITY HAVING JURISDICTION IN THE USA OR 
CANADA. IF THESE INSTRUCTIONS ARE NOT FOLLOWED 
EXACTLY, A FIRE OR EXPLOSION MAY RESULT, CAUSING 
PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF 
LIFE. THE QUALIFIED AGENCY  PERFORMING THIS WORK 
ASSUMES RESPONSIBILITY FOR THIS INSTALLATION.
WARNING
GENERAL INFORMATION
The  bi-fold  glass  door  assemblies  listed in  this Instruction  Sheet  are 
designed for use with Lennox Hearth Products fireplaces or appliances 
that specify 36", 38", 42", 43", or 50" LBF Series doors.
Each door assembly consists of a right and left glass panel assembly 
with factory-mounted door handles. 36LBF Series and 42LBF Series door 
kits also include air deflectors. 50LBF Series door kits also include vent 
channels. Each kit also includes a center door clip hardware kit. 
DO NOT ALTER OR MODIFY THESE DOOR ASSEMBLIES, OR A FIREPLACE 
MALFUNCTION OR FIRE HAZARD MAY RESULT.
The LBF Series bi-fold glass doors have been tested and listed by Intertek.
PLEASE RETAIN THIS MANUAL FOR FUTURE REFERENCE. 
ALL WARNINGS, PRECAUTIONS, AND INSTRUCTIONS IN THE 
INSTALLATION INSTRUCTIONS AND CARE AND OPERATION MANUALS 
PROVIDED WITH THE APPLIANCE APPLY TO THESE INSTRUCTIONS.
KIT CONTENTS 
(Letters in brackets refer to Figure 2.)
• 1 ea. Bi-Fold Door, Left [A]
• 1 ea. Bi-Fold Door, Right [A]
• 1 ea. Air Deector, Left [B] 
   (36LBF and 42LBF Series doors only)
• 1 ea. Air Deector, Right [B]
   (36LBF and 42LBF Series doors only)
• 1 ea. Vent Channel, Left [C]
   (50LBF Series doors only)
• 1 ea. Vent Channel, Right [C]
   (50LBF Series doors only)
• 1 ea. Center Door Clip Hardware Kit [D]
• 1 ea. Warranty
TOOLS NEEDED
• Medium Phillips Screwdriver
• 3/8" Open-end Wrench
KITS
 Kit   Model     Finish   
36LBF Series Bi-Fold Glass Door Kits
12M17  36LBF  Black
12M19  36LBF-BS  Brushed Stainless
38LBF Series Bi-Fold Glass Door Kits
12M20  38LBF  Black
12M21  38LBF-BB  Brass
12M22  38LBF-BS  Brushed Stainless
42LBF Series Bi-Fold Glass Door Kits
H7962  42LBF  Black
H7964  42LBF-BS  Brushed Stainless
43LBF Series Bi-Fold Glass Door Kits
12M23  43LBF  Black
12M24  43LBF-BB  Brass
12M25  43LBF-BS  Brushed Stainless
50LBF Series Bi-Fold Glass Door Kits
H7965  50LBF  Black
H7967  50LBF-BS  Brushed Stainless
HOT FIREPLACES WILL CAUSE SEVERE BURNS.  
DO NOT TOUCH GLASS, METAL FRAME OR SCREEN 
UNTIL COOLED. NEVER ALLOW CHILDREN TO TOUCH 
THESE AREAS. 
WARNING
Figure 2
Figure 1
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE
[B] Left/Right Air Deflectors 
  (36/42LBF Series only)
[C] Left/Right Vent Channels
  (50LBF Series only)
[A] Left/Right Bi-Fold Doors 
[D]  Center Door Clip and
  Hardware




