Datasheet

Stability
Stability, or rather instability – the degree of “bounciness”
or “slop” in the AKT – impacts typing and mousing
comfort. Minimizing this instability is essential for
workplace productivity and is driven by the quality of the
keyboard tray’s construction and design.
All of 3M
™
’s Adjustable Keyboard Trays meet the ANSI/
BIFMA x 5.5 – 1998 standard for stability and safety.
Ease of Adjustability
AKT height and tilt adjustability is essential for
workstation ergonomics. Generally it is more
advantageous for the height and tilt control mechanisms
to be independent of each other. This way, the height of
the keyboard can be adjusted without losing the tilt
angle, and vice versa.
There are typically three types of height
adjustment systems:
1 Lift and lock, the easiest of the three, works by simply
tilting upward to unlock, then back down to lock
in place.
2 Lever arm mechanism works by engaging and
disengaging a hand-held lever.
3 Star-knob mechanism works by loosening and then
tightening a knob on the side of the arm. Typically,
star-knob systems do not have separate controls for
tilt and height adjustment.
Mousepad Adjustability
Mousepads on AKTs are generally available in
two forms:
• Not adjustable – integrated as part of the
keyboard platform.
• Adjustable – mouse platform is separate from
keyboard platform and has varying degrees
of adjustability.
Mousepads should also be adjustable for left or right
hand use. All 3M
™
AKTs feature this functionality.
Range of Adjustability
Adjustable Keyboard Trays feature many degrees of
adjustability, including height, tilt, lateral sliding and swivel.
• Height – While seated at a standard 29" high desktop, AKT
height will rarely need to go above the desktop. Many
ergonomists recommend sit/stand capable workstations in
which the worker can alternate throughout the day between
sitting and standing at the workstation. This is beneficial
because it varies the muscle groups used, increases blood
flow and reduces the risk of repetitive stress injuries. AKTs
with sit/stand capability enable this behavior and will
typically rise several inches above the desktop.
• Tilt – Keyboard platforms should offer tilt adjustment in
order to keep one’s wrists in a neutral position. The greater
the degree of negative tilt, or forward tilt, the more
ergonomic the AKT is.
• Lateral Sliding – This feature enables users to adjust the
left/right position of the keyboard to fit exact workstation
configurations.
• Swivel – A common feature that enables users to adjust the
position of their keyboard relative to the workstation.
Track & Arm Length
AKTs generally feature either a short (~17") or long (~21"+) track
and arm length, each with unique benefits.
• Long tracks and arms are compatible with corner
workstations where the keyboard must extend beyond the
edges of the desk. They will also work on regular straight-on
workstations providing there is ample depth underneath the
work surface.
• Short tracks and arms are generally less expensive and
perfect for regular straight-on and especially shallow
workstations. They are not suitable, however, for corner
workstations where a longer length is required.
Wrist Rest Construction
Wrist Rests for both keyboard and mouse are essential to
encouraging a neutral, ergonomic wrist position.
Wrist Rests are made out of many materials including gel, foam
and hard plastic. Gel-filled wrist rests provide the maximum
comfort level, and all 3M
™
AKTs feature gel-filled wrist rests for
both keyboard and mouse.
Adjustable Keyboard Trays
What to look for in an Adjustable
Keyboard Tray
There are many Adjustable Keyboard Tray (AKT) options to choose from today and it can be
difficult to determine which is the best solution for your situation. This quick guide will help
explain the features that end users and specialists in the field find most important.
4 Toll Free 1-800-332-7483
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