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Contact Information

Mailing Address:
B.L. Wilcox & Associates
P.O. Box 829
Whittier CA 90608

Physical Address:
7615 Baldwin Place
Whittier CA 90602

Toll Free: 800-272-0643
Local: 562-693-2787
Fax: 562-693-5843

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Disappearing Stairway

We offer customized construction for any job. Compare these features to the competition:
  • Test Weight of 500 lbs.
  • Individual tread test weights of 1000 lbs.
  • Actual shear of rivets tested to 1175 lbs.
  • Steel Frame
  • Extruded aluminum treads & siderails.
  • 5-3/15" x 19-1/2" clear tread area.
Disappearing stairs attic access diagram
  • Lock on door panel
  • Special deep frame to accommodate dropped ceilings
  • Recessed door panel for installation of ceiling finishes
  • Factory mounted roof hatch to utilize unit for roof access
  • 2 hour fire-rated Warnock Hersey label that meets ASTM E-119 & UBC 43-7 requirements, passed 250' temperature rise in the first 30 minutes.
Disappearing stairs roof access diagram

Use the drawings below with the charts below to find the dimensions for stairway.

Required Information:

  1. Floor to ceiling height ("C")
  2. Distance from finished ceiling to floor above ("D")
    If "D" is less than 13", the standard box frame will work fine,
    only Chart 1 is needed.
    If "D" is 13" or more, Chart 2 is needed to determine
    the opening size at the floor above.
Angle frame and box frame diagram to determine the correct dimension for stairway.

MODEL NUMBER = SS/AL-"C" where "C" is exact ceiling height.
For additional "D's" on Chart 2, please call.

Standard box frame chart 1

Non-Standard box frame chart 2