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Free accessory with UPLIFT desk purchase >

Knoll Act II Keyboard Platform

item#: KNL304

The Knoll Act II Keyboard Platform is a light and compact keyboard tray solution that features easy, knob-free height adjustment. Slim and versatile, the Act II is sized to fit almost any work surface, including small or radius corners. The Knoll Act II Keyboard Platform also features a separate swiveling mouse platform; for a model wide enough to support your keyboard and mouse on the same plane, be sure to check out the Act I Keyboard Platform.

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The Knoll Act II Keyboard Platform is available with several different mechanism options. All mechanisms feature spring-assisted knobless height adjustment, 360 degrees of pivot at the mechanism, and a black textured metal finish.

Short Easy Lift Arm

The Short Easy Lift Arm is ideal for shallower work surfaces. It features negative tilt adjustment from 0° to 15° and 4.26'' of variable height adjustment (1.06'' above the track to 3.20'' below).

Knoll Act II Keyboard Platform Short Easy Lift Arm

Easy Lift Arm

For more height adjustment, the Easy Lift Arm features 7.04'' of variable height adjustment (2.83'' above the track to 4.21'' below). It also features negative tilt adjustment from 0° to 15°.

Knoll Act II Keyboard Platform Easy Lift Arm

Sit-Stand Arm

For maximum height adjustment, the Sit-Stand Arm gives you a full 11.57'' of variable height adjustment, and negative tilt from 0° to 15°. The Sit-Stand Arm features torsion spring-assisted variable height adjustment from 6.40'' above the track to 5.17'' below.

Knoll Act II Keyboard Platform Sit-Stand Arm

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Mouse Pad

The Act II Keyboard Tray comes standard with a swiveling mouse platform on the right side, which can be removed and placed on the left for left-handed users. For multiple users or ambidextrous mousing, a dual swiveling mouse platform option is available. Mouse pads feature a contoured lip to prevent your mouse from falling.

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All Knoll keyboard platform mechanisms come standard with 360 degrees of rotation at the mechanism. For even more flexibility and adjustment, you can add a second pivot point at the platform. This allows the platform to move independently from the arm, so that it can remain parallel to your desktop when the arm is rotated.

Knoll Keyboard Platform pivot

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Track Length

The Knoll Act II Keyboard Platform is available with five different track lengths to accommodate desktops of various depths. The minimum clearance required under your desktop is the length of the track plus 1/2''.

  • 16'' track
  • 17.75'' track
  • 21.63'' track
  • 22.63'' track
  • 25'' track

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Delivery Options

Large items like this one are shipped via freight truck directly from the manufacturer. Knoll offers free freight delivery to any commercial location with a loading dock that is accessible to a 53' trailer. If you do not have access to a loading dock, or if your items are being delivered to a residence, we are required to first ship the items to a local white glove delivery agent for assembly and inside delivery. If you are purchasing more than one item, we are able to offer discounted pricing on white glove assembly and delivery. Please call 1-800-531-3746 for details.

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The Knoll Act II Keyboard Platform comes standard with 360 degrees of rotation at the mechanism, but also includes the option to add a second pivot point at the platform that lets you keep it parallel with the desktop as you rotate the arm. Three different arm options are also available with different levels of quick, knobless lift-and-lock height adjustment. With so many customizable options and such a compact profile, the Knoll Act II Keyboard Platform will fit nearly any workstation or user, giving you relaxed, comfortable typing and mousing.

Features -
Knoll Act II Keyboard Platform

  • Slim phenolic keyboard platform with separate swiveling mouse platform has a low profile, even when the mouse platform is stored underneath the keyboard support, making it a compact solution for corner configurations or anywhere where space is at a premium
  • Arm mechanisms feature quick and easy knob-free height adjustment with the spring-assisted, lift-and-lock height-adjustable arm
  • Features your choice of short arm, standard easy lift arm, or sit-stand arm mechanism, all with 15 degrees of negative tilt and 360 degrees of rotation where the arm meets the track
  • Optional second pivot point available at the platform where it meets the arm, which allows the keyboard tray to stay parallel to your desktop while rotating the arm at the mechanism
  • Swiveling mouse platform includes contoured lip to keep the mouse from falling during adjustment and lycra-covered polyurethane mouse pad
  • Available with a single mouse platform that comes standard on the right but can be easily moved to the left, or upgrade to dual mouse platforms
  • Foam-filled vinyl wrist rest included for extra comfort while typing
Knoll Act II Keyboard Platform Specifications

Overall dimensions Retracted mouse pad: 19'' W x 11.5'' D x 0.25'' thick
Extended single mouse pad: 27.25'' W x 14.75'' D x 2.25'' thick
Extended double mouse pads: 35.5'' W x 14.75'' D x 2.25'' thick
Tilt adjustment 15° negative
Swivel at mechanism 360°
Track lengths 16'' to 25'' L
Warranty 10 years

Disclaimer: We do not accept cancellations or order revisions for any Knoll items ordered. See Knoll's No Cancellations or Revisions Policy for details.

Professor Ergo's Thoughts:

The Knoll Act II Keyboard Platform features a swiveling mouse platform that can be mounted on the right or left side, and is also available with dual mouse platforms to accommodate multiple users or ambidextrous mousing. We recommend switching between your left and right hand to mouse periodically in order to combat or prevent repetitive stress injuries.

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Customer Reviews

Knoll Act II Keyboard Platform

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