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Commercial fire resistant attic stairs
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Description

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Specifications DWG's

Common questions certificates

Installation instructions

Customer comments

 

We are no longer offering aluminum folding ( series 3000), aluminum telescopic (series 2000), aluminum telescopic for existing openings and commercial folding attic stairs. We hope you can find suitable products in our offering of wooden folding or steel telescopic attic stairs which provide even better features than our discontinued products.

 
 
 
Series 4000
  • Solid construction intended for heavy duty use where fire protection is important
  • Compact stairs easy to operate
  • 300 lb capacity user and materials combined
  • Extruded aluminum ladder
  • Wide steps, 16" x 3.5"
  • Ladder provides solid and comfortable support for user
  • Welded metal frame with build in metal ceiling flange to provide tight seal
  • High temperature sealing gasket between the door and frame
  • 30 or 60 minute fire rated cover door panels, please read next page*
  • Locking latch keeps stairs cover securely closed
  • Attic access opening sizes from 28" x 44" to 28" x 52"
  • Ceiling heights from 7' 2" to 10' 6", cut to length
  • Unique spring closing system ensures smooth operation and eliminates binding problems common on other attic stairs
  • Cover door and frame has white paintable finish, painting not required.
  • Fully assembled
  • Pull down rod is included
      *Please read the common questions page. We do not guarantee the fire rating will be accepted by your local authority.

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30 minute Fire rated stairs cover door features:
White sheet metal clad bottom side, 3/4" particle board core, 1.5" polystyrene foam panel on the top of the cover door, White MDF panel on the top of insulation, 30 minute Fire rating available.

Model#
(A) Floor to celing height
(C,D)Rough opening
Door cover thickness
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4085
Discontinued
7' 2" to 9' 1"
28" x 48"

3/4" cover panel plus 1.5" foam

 

4086
Discontinued

7' 8" to 10' 6"

28" x 52"

3/4" cover panel plus 1.5" foam

 

4087
Discontinued

7' 2" to 9' 1"

28" x 44"

3/4" cover panel plus 1.5" foam

 

4088
Discontinued

7' 2" to 9' 1"

24" x 44"

3/4" cover panel plus 1.5" foam

 
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Indicated price does not include the cost of shipping. Commercial stairs have to be shipped by common carrier, truck. Please continue with your purchase to get a freight quote.

60 minute Fire rated stairs cover door features:
White sheet metal clad all sides, 7/8" Grenamat(R) board core (mineral based product), all seams overlap are riveted, 1.5" polystyrene foam panel on the top of the cover door, White MDF panel on the top of insulation, * 1 hour fire rating available
The primary function of these products is to stop fire. The fire rated cover doors are quite heavy and require some effort to open and close. Unless your project specifically requires fire rating and especially if the stairs may be used frequently, we would recommend the fire resistant models ( 4085 to 4086) or aluminum folding stairs ( models 3005 to 3015) instead. They use the same ladders and are easier to operate.

Model#
(A) Floor to celing height
(C,D)Rough opening
Door cover thickness
Order by clicking
ADD to or VIEW your shopping cart
4095
Discontinued
7' 2" to 9' 1"
28" x 48"

7/8" cover panel plus 1.5" foam

 

4096
Discontinued

7' 8" to 10' 6"

28" x 52"

7/8" cover panel plus 1.5" foam

 

4097
Discontinued

7' 2" to 9' 1"

28" x 44"

7/8" cover panel plus 1.5" foam

 

4098
Discontinued

7' 2" to 9' 1"

24" x 44"

7/8" cover panel plus 1.5" foam

 
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Calvert USA, Inc., All rights reserved, Calvert Attic Stairs, Calvert Stairs are trademarks of Calvert USA, Inc.