Instructions / Assembly
Patent#
 6,357,891
Incandescent  6” Air-Tight Incandescent Fire-Box
®
 Recessed 
  Up to 2-hour fire resistant 
  Air-Tight Non-IC
     Type
     P821-FBFC  
    Dimensions (Inches)
Catalog No.  Lamping  A  B  C 
P821-FBFC  See Trim Specifications  16-1/8  10-1/4  8-3/4
    Ceiling Opening 6-7/8
Specifications:
Wiring
• Universal J-box with snap-out sides
• 1/2” & 3/4” Knock outs for rigid conduit 
or BX fittings
• Grounding pigtail
• Knock out free integral Romex clamps
• Access door in housing for field 
inspection of wiring
Construction
• Adjustment for ceiling thickness from 
1/2” to 2”
• Steel outer housing
• For new construction applications
• Notched housing for chalkline alignment
• Overspray protection
• Socket can be used as a work light
• Porcelain socket with nickel-plated brass 
screw shell
• Fits into 2X10 construction
• 6 pieces of UL classified fire resistant gypsum 
board attached to recessed housing
• Fiberglass gasket on bottom of frame to 
minimize heat transfer into ceiling cavity
Bar Hangers
• Integral nailers for wood joist 
construction. Must be reinforced with 
screws/nails per instruction sheet.
• Integral T-Bar mounting clamps
• Spans 24” spacing; ceiling wires are 
required to support housing in all 24” 
on center spacing. 4 lances in bar hanger 
channels provide means for attachment.
• Lock in position to secure housing
• Comes with 4 clips for mounting bar 
hangers to furring channels when present 
in a fire rated assembly. (Required for most 
P500 series applications).
Labeling
• Non-IC rated; insulation must be kept at 
least 3” away from housing
• UL-CUL listed for damp location and 
feed through wiring
• UL Classified to maintain fire ratings of 
1 hour or less for all UL P500 series fire-
rated ceiling/floor assemblies
• UL Classified to maintain fire ratings of 
2 hours or less in all UL D200, G200, 
L200, D500, G500 and L500 series fire 
rated ceiling assemblies.
Lamp/Trim
• Socket mounts to trim for optimum 
performance and consistent lamp position
• Trim-Lok
®
 action for trim retention 
forces trim to fit snugly against the 
ceiling
• Gasketed for Air-Tight - Allows less than 
2 CFM of air loss through fixture into 
ceiling cavity
Progress Lighting
Post Office Box 6701
Greenville, South Carolina 29606
www.progresslighting.com
Rev. 6/07
A
B
• Trim must be ordered separately.
C




