Harmar Mobility

Self Installation Stair Lift | Harmar SL300

$3,445.00 - $4,195.00
Free Shipping
Adding to cart The item has been added


Harmar Stair Lift | Pinnacle SL 300 | Self Installation!

Harmar Stair lift, Pinnacle SL 300,  is made in the USA and offers the finest in streamlined, ultra-compact design and performance.   


Pinnacle SL 300 straight rail stairlift combines strong, subtle operation with reliability and safety.  

Engineered to the highest industry standards, Pinnacle stair lifts are designed for optimal comfort, convenience and aesthetics. Space-saving Pinnacle folds to 11 inches, making it the narrowest lift on the market. And its patented helical worm gear drive generates the smoothest, safest and most energy-efficient ride available.

The Pinnacle SL300 has earned its name and reputation for standing above the rest. Design, Form and Function come together to make Pinnacle the most reliable, durable, and sought after stair lift on the market. 

What makes Pinnacle different? It’s what you don’t see, the patented Helical Worm Gear and reinforced Nylon Polymer Gear Rack. This innovative drive system eliminates maintenance, provides you savings with lower energy bills, and delivers a smooth, stable ride you can rely on. 

The Pinnacle SL300 is COMPACT - The Pinnacle SL300 seat folds up neatly, occupying a mere 10.5" of width from your staircase wall and allowing others to pass by. The rail mounts only 0.5" from the wall and is only 3" tall, helping to minimize its footprint. 

The SL300 and SL300FR offer a 300 lb weight capacity and the confidence to conquer the stairs in your home. 

Harmar Stair Lift 300 Features:


  • Narrowest stair lift in the industry – only 11” wide when footrest and seat are folded!

  • Swivel seat at upper landing, for easy and safe, entry and exit

  • Easy operating controls and indicator lights

  • Patented helical worm gear drive system for extremely smooth ride

  • Operable in a power outage – up to 40 trips!

  • Comfortable seat with height adjustment

  • Safety sensors will stop the lift if it meets an obstruction

  • No greases or lubricants; easy to vacuum and keep clean

  • 2-Year warranty on components, 10-Year on gear rack, 1-Year on batteries

  • Easy, 1 person installation (Harmar recommends that all stair lifts are professionally installed)

  • Made in the USA

Harmar SL 300 Specifications:

  • Weight capacity 300 lbs (136kg)

  • Electrical requirements 115 VAC

  • Operation power 24V DC Battery

  • Travel distance 16 ft is standard; lengths available up to 75 ft

  • Speed 17-21 ft/minute

  • Incline limits 32– 52 degrees

  • Drive system Polymer worm/worm-rack

  • Track (rail) type Extruded aluminum

  • Average return trips per charge 20 – 40 (varies with load, length)

  • Switchable arms (Left or right hand operation) Yes

  • Need to open chassis to install or change sides No

  • Available Seat Colors: Light Almond (Standard), Bluebell, Pine Green, Ruby Red


  • Most states have minimum passing widths when the stairlift is folded.  In Michigan that distance is 20" when the lift is folded.  Therefore, this lift should meet code in Michigan, when installed properly, if the stairway is at least 31 inches wide.


  • Folding Rail - Harmar’s exclusive automatic and mechanical folding rail eliminates a trip hazard at the lower landing area. Its operation is automatic, the user does not need to stop or have someone else assist. And since it’s mechanical, there are no additional switches or controls.

  • Key Lock 

  • The Pinnacle SL300 comes standard with 15'6" of rail, which is enough for most stairways.  7" of top tread overrun is required.  Therefore, the standard rail will work on stairways with lower floor to top nose lengths of 14' 9" or less.  The purchaser has the option to buy additional Rail.


Owners Manual

Installation Manual


Site Evaluation Form



Please Note:

  • It is the purchaser's responsibility to investigate, know and comply with State and Local law.  EZ Able® is not responsible for the purchaser's compliance with State and Local Law.  Some States require a permit and professional licensed installation for stair lift installations. Some states include, but may not limited to: Washington, Oregon, Minnesota and New Jersey. Please check with your state and/or local government office regarding permitting as well as other installation requirements.

  • Installed Service MAY BE available in your area.  Please contact us to learn more.  Installatin costs vary regionally due to additional travel costs, permit fees, site preparation, etc.  EZ Able® makes its best effort to consider these costs in advance.  However, we reserve the right to modify pricing if needed.

  • Non-Refundable once your product is purchased from the Manufacturer for your project.
  • **WARNING! STRICT ADHERENCE TO THESE INSTALLATION INSTRUCTIONS is required and will promote the safety of installers, as well as those who will use the lift for its intended purpose. Any deviation from these instructions will void the LIMITED WARRANTY that accompanies the product. Additionally, any party installing the product who deviates from the INSTALLATION INSTRUCTIONS shall be taken to agree to INDEMNIFY, SAVE AND HOLD HARMLESS the dealer and the manufacturer from any and all loss, liability or damage, including attorney fees, that might arise out of or in connection with such deviation.

Harmar Stair Lift | Pinnacle SL 300 

Free Shipping* is only available for orders over $50 shipping to a location within the contiguous USA.

Please Call 877.392.2531 for shipping availability and cost to ship to locations outside of the Contiguous USA.

See More

Specification Sheets

Lead Time and Shipping Info


Have a question?

We're here to help.