Technical Specifications

ENDURO
HOT-DIPPED GALVANIZED EXTERIOR SPIRAL STAIR
The ENDURO model is available in 3 diame-
ters - 3 ft. 11 1/4“, 4 ft. 7 1/8“, and 5 ft. 3“.
The ENDURO STEEL is manufactured with
12 gauge steel. It has a HOT-DIPPED GAL-
VINIZED FINISH and is ready for installation.
All hardware is stainless steel.
The standard ENDURO STEEL staircase kit is
adjustable in height from a range of 8 ft. 3 in.
to 10 ft. 1/8 in. and with additional compo-
nents, can be adjusted to a minimum of 6 ft.
10 in. or a maximum height of 12 ft. 4 in. The
standard kit with 12 treads and the landing
installs with a 360° turn. By adding or sub-
tracting treads the rotation will change by ap-
prox. 30° per tread.
The ENDURO STEEL stair treads are ventilat-
ed to provide a slip-resistant surface even
when wet. The handrail is black extruded
PVC.
To allow for proper installation and full clear-
ance, the finished opening for the installation
of the spiral staircase of your diameter choice
MUST be at least 2 INCHES GREATER than
the diameter of the staircase kit. It can be in-
stalled in a square or mezzanine opening.
A BALCONY RAIL KIT is NOT AVAILABLE
for the ENDURO STEEL staircase kit.
SAFETY BARS are available in a set of 12 to
close off the back of treads.
Each ENDURO STEEL staircase kit is
shipped complete with detailed assembly in-
structions and a DVD to assist in your installa-
tion. You can also view an installation video
on our website at www.arkestairs.com
IMPORTANT: CONSULT YOUR LOCAL BUILDING INSPECTOR FOR ANY QUESTIONS AND SPECIFICS
REGARDING COMPLIANCE WITH THE LOCAL BUILDING CODES PRIOR TO PURCHASE.