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Fire-Tite-IMBAlpine® Fire-Tite® IMB
Insulated Fire Doors

  • Insulated Fire Doors IMB Insulated Curtain
  • High Quality Fire Door at a Competitive Price
  • Optional Internal Flame Baffle Prevents Infiltration Thru Header
  • Approved for Stainless Steel Fire Doors
  • Certificate up to 56'x30'
  • Built in Accordance with Requirements Specified by Underwriter's Laboratories Inc.
Available Classifications:

3 Hour Approved for Doors in Dividing Fire Walls with Openings not Exceeding 152 sq. ft. in area. • 1.5 Hour Approved for Doors, in Vertical Shaft Openings not Exceeding 152 sq. ft. in area. • .75 Hour Approved for Doors in Corridor or Room-Partition Opening not Exceeding 152 sq. ft. in area. • 1.5 Hour Approved for Doors in Exterior Wall Opening not Exceeding 152 sq. ft. in area.

Alpine's Fire Door is tested & approved for the protection of openings in fire walls, vertical shafts and exterior walls up to 152 sq.ft. with a maximum width or height of up to 13ft 6in For openings that exceed these limitations, an oversize certificate is available for sizes up to 56' in width and 30' in height.

Fire-Tite® IMB curtains are constructed of galvanized steel insulated up to 7/8" thick slats, and can be finished with powder coating or baked enamel finishes. The metal on metal insulated slats have a 7/8" thick mineral wool fireproof insulation. Each door is equipped with a 22 gage steel hood formed to fit the contour of the end brackets. Durable ductile iron with 1/4" semi-solid rivets, hot dipped end locks and wind locks are available. Our door supports and brackets are all steel plates no less than 1/4" thick. Alpine's Torsion Counterbalance Assembly is state of the art, providing maximum security and ease of use.

Click Here for UL Labeled Smoke and Draft Control Assemblies

Contact us today to find out which Alpine® solution is right for you!

 
 
 
 
 
 
 

  Fire Test

See for yourself how Alpine® Fire Doors handle the heat. Click here for some pictures from one of our recent fire tests.

   
  Powder Coating

Our large selection of colors make our doors decorative and durable.

Standard Colors
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Special Effects
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IMB Curtain Detail

IMB Curtain Detail
Double Angle Bottom Bar
Double Angle Bottom Bar


Structural Guides

Structural Guides

 

Disclaimer: All data provided on this website is to be used for information purposes only, and is subject to change without prior notice.