Pinnacle Stairlifts

SL300 Stairlift seat
SL300 Stairlift seat Harmar SL300 straight stairlift presented in a home interior Side perspective of Harmar SL300 straight stairlift with a focus on the seat design Front view of Harmar SL300 stairlift showcasing simplicity and safety Harmar SL300 stairlift folded to demonstrate space efficiency Detailed view of Harmar SL300 stairlift's control panel and safety features


Pinnacle Stairlifts

  • Homes (Residential)

Going up? The Pinnacle SL300 is here to help you take that step towards accessing every floor in your home. With a lifting capacity of 300 lb, the SL300 provides riders with the confidence to go up and down their stairs safely and comfortably.

  • No grease or lubrication equals no mess! Cleaner for you, your home, and pets.
  • Efficient motor with a nylon polymer gear/worm drive provides up to 60 up and down cycles on batteries during a power outage.
  • Narrow staircase? No problem. When folded, the SL300 is the most compact stairlift in the industry, with the rail mounting 1” from the wall and standing at 3” tall to help keep out of sight.
  • Smooth, efficient Power Seat Swivel and Power Footrest options are available for easy mounting and dismounting.
Ergonomic control switch
for easier control
Oversized footrest for more
comfort and security
Seat belt for optimal safety
Remote control to call or
send your seat


  • The over-sized worm gear offers greater stability
  • Power seat swivel and power footrest options for smoother, easier seating and standing
  • Lubrication free, keeps you, your stairs and even your pets free from a mess
  • Symmetrical design provides industry's most compact folded width
  • Operable in a power outage – up to 40 trips!
  • Safety sensors in the footrest and optional in the chassis will stop the lift if it meets an obstruction
  • Weight Capacity
    300 lb (136 kg)
  • Seat Size
    Seat: 19" W x 16" D
    Back: 16.5 W x 9.5" H
  • Speed
    20 FPM
  • Folded Width
    11"; 13.6" with folding rail
  • Track Length
    15'6" Standard
    Up to 36'
  • Incline Limits
    27° - 52° (inclines above 45° may require local jurisdiction approval)
  • Drive System
    • Patented nylon polymer gear rack
    • Helical worm gear
  • Safety Features
    • Seat belt
    • Overspeed brake
    • Audible alert system
    • Swivel seat with interlock
    •Footrest obstruction sensor
  • Options
    • Retractable seat belt
    • Automatic folding rail
    • Chassis obstruction sensor
    Key lock
    • Extra rail + brackets
    • Manual lowering tool
No Accessories Available.
Warranty: 2-Year Parts Warranty
• 10-Year on Gear Rack
• 1-Year on Battery

Get assistance from your local knowledgeable
Harmar dealer!

Consultations are available over the phone, online, or in person.

“I needed a stairlift because it was so hard for me to go up and down the stairs – I was always afraid of falling. I had to hold onto the banister with both hands and put both feet on each step. Now, I can get up and down the stairs and outside without being so worried!”

“I was looking for a stairlift for my mother – she’s going on 92 years now and she has mobility issues. She loves the straight stairlift from Harmar. Great crew, great installation. Everything was just wonderful. We couldn’t be happier with it.”

“Before getting my SL300, I took my stairs very cautiously. I used to have to count each stair when going down so I don’t miss one. I’m so grateful for my stairlift because I don’t have to dread taking the stairs.”

Factors to Consider before Making a Decision

The Pinnacle straight stairlifts are designed to perfectly fit any straight staircase without any curves to the structure. With a narrower seat and 1” installation from the wall, the SL300 is optimal for narrow stairways. To avoid any obstruction near doorways, walls, or walkways, add a folding rail to the bottom of your stairlift.
At Harmar, we understand everyone has different needs. We offer three different sizes in our stairlifts: SL300, SL600, and SL600HD. The SL600 seat offers a more comfortable chair with a larger backrest, while the SL600HD can accommodate up to 600 lb and offers a wider, padded chair and larger backrest. Which will best suit your lifestyle and home?