Attic Stairs Minimum Width
Unobstructed headroom of at least 30 inches must be available above the attic opening.
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For smaller attic ladder openings with a minimum measurement of 18 x 24 you will need to measure from the finished floor to the attic floor. One Touch Electric Attic Stairs - 8 to 16H - 500 lb Capacity. When the access is located in a ceiling minimum unobstructed headroom in the attic space shall be 30 inches 762 mm at some point above the access measured vertically from the bottom of ceiling framing members.
Winders - Winders must have the required width of run provided at a point 12 inches from the narrow side of the stairs but in no case may the winder be less than 6 inches in width. 25 x 54 - most-common small width pull-down attic stair. With an installation range of 8-16 and rough opening lengths of 54 60 61 and 65 widths of 225 255 and 30 One-Touch is in a league of its own in.
An approval process should start with a dimensioned drawing. When located in a wall the opening shall be a minimum of 22 inches wide by 30 inches high. Have treads of at least 10 deep.
Exception to paragraphs c 2 and 3 of this section. The rough opening for a full-size attic ladder should be at least 225 by 54 inches. Provide a minimum of 68 of headroom the entire walking length of the stairs.
Swing Clearance Measure and verify the amount of space available to swing out the stair sections of your ladder this extends beyond your attic opening. If mechanical equipment or appliances are housed in the attic there must be an unobstructed passageway. One-Touchs patented revolutionary design incorporates aerospace technology focused on quality safety and reliability.