Dimensional/
Technical Data
Minimum Height,
Floor to Floor
36" (91.44 cm)
42" (106.68 cm)
24" (60.96 cm)
Maximum Height,
Floor to Floor **
240" (609.60 cm)
240" (609.60cm)
216" (548.64 cm)
Overall Height,
(Standard Handrails)
H + 42"
(H + 106.68 cm)
H + 42"
(H + 106.68 cm)
H + 42"
(H + 106.68 cm)
Overall Height,
(Optional Parapet)
H + 5 3/4"
(H + 14.61 cm)
H + 5 3/4"
(H + 14.61 cm)
H + 3 3/4"
(H + 9.53 cm)
Overall Width
23" (58.42 cm)
23" (58.42 cm)
23" (58.42 cm)
Run (within +/-
1 inch (25.4 cm))
0.675 (H-6.42") + 9.5"
0.675(H-16.301 cm) + 24.13 cm
0.404 (H-7.517") + 9.5"
0.404 (H-19.093 cm) + 24.13 cm
0.404 (H-7.175") + 9.5"
0.404 (H-18.225 cm) + 24.13 cm
Recommended Minimum Floor Opening, Width
35" (88.90 cm)
35" (88.90 cm)
35" (88.90 cm)
Recommended Minimum Floor Opening, Length
70" (177.8 cm) + 2/3 Floor Thickness
62" (157.48 cm) + 2/5 Floor Thickness
62" (157.48 cm) + 2/5 Floor Thickness
Minimum Riser Height
6.417" (16.299 cm)
7.517" (19.093 cm)
7.175" (18.225 cm)
Maximum Riser Height
7.700" (19.558 cm)
9.020 (22.911 cm)
9.566" (24.298 cm)
Approximate Net Weight
1.428(H) + 32 lbs. (H <120")
1.688(H) + 32 lbs. (H 120")

0.255(H) + 14.52 kg (H <3.05m)
0.301(H) + 15.42 Kg (H 3.05m)
1.332(H) + 21 lbs. (H <144")
1.488(H) + 31 lbs. (H 144")

0.238(H) + 9.53 kg (H <3.66m)
0.266(H) + 14.06 Kg (H 3.66m)
.690 (H) + 20 lbs.


0.1232 (H) + 9.07 Kg
    • H = Height from upper finished floor to lower finished floor in inches (centimeters).
    • The above formulas are for estimating purposes and are subject to change without notice. For more complete data, call for a complimentary dimensional print.
    • **To reduce vibration, stairs in excess of 15' (4.57m) may require customer supplied sway bracing. For vertical heights in excess of 15' (4.57m) Lapeyre Stair, Inc. recommends an intermediate platform with two stairs of equal height.
    • Customer supplied bracing/support is required for all platforms.