Hinges Lid and Flap Stays AVENTOS HL Lift Up System & SERVO-DRIVE by Blum
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Aventos Servo Drive HL Arm Assembly for Cabinet Height 17-11/16 inch to 22-13/16 Inch, Minimum Opening Height 16-1/4 Inch, Recommended for Appliance Garages

Product Discontinuation AlertThis item has left our catalog. It's either upgraded to a newer model, didn't meet our high customer satisfaction standards, or the manufacturer said goodbye. But don't worry, CabinetParts is always here with top-notch alternatives.


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All the product info you could ask for...

  • Size Info

  • Notes : This unit will replace item BA20L3900.05 when using Servo-Drive for Aventos
    Stabilizer Rod cutting dimension for Servo-Drive application is length= interior cabinet width minus 6-7/16"
  • For Cabinet Heights : 17-11/16" - 22-13/16"

  • Manufacturer Info

  • Manufacturer : Blum
  • Manufacturer Part # : 21L3900.01

  • Other Important Info

  • Product Type : Servo-Drive Arm Assembly Set HL
  • Sold : Includes Servo-Drive Arm Assembly (Left)
    Standard Arm Assembly (Right)
    (2) Stabilizer Rod Cover Cap

  • Manufacturer Resources

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Our customers say Blum products...

  4.5 out of 5
based on 200 ratings

"These reviews are from our customers who have purchased Blum products."
  • 1 of 5 Not the correct part April 21st, 2026
    by Tom from Kenmore, WA

    I am having a difficult time finding the correct part.

    This review is about similar Blum Hinges. (BA20S4200)

    Was this review helpful? yes no

  • 4 of 5 Easy Install and Adjust March 18th, 2026
    by Brian from Crested Butte, CO

    Way easier to install and adjust than a horizontal hinge. Probably a wash on price.

    This review is about similar Blum Hinges. (BA22K2300T)

    Was this review helpful? yes no

  • 5 of 5 Great service February 27th, 2026
    by Michael from Montville, NJ

    Buying was simple, and my order arrived right on time. The plate was a perfect match as described. I highly recommend CabinetPart.com website for all cabinet parts purchases.

    This review is about similar Blum Hinges. (BH175H3100)

    Was this review helpful? yes no

  • 3 of 3 people found the following review helpful
    5 of 5 Love these door lifts August 6th, 2025
    by Mary from MIDLOTHIAN, VA

    These cabinet door lifts are extremely easy to install and have adjustment screws to fine tune their location. Soft close is a nice added feature. I love these for cabinets located above appliances.

    This review is about similar Blum Hinges. (BA22K2900)

    Was this review helpful? yes no

  • 3 of 6 people found the following review helpful
    1 of 5 Not Good July 8th, 2025
    by Frank from Indian Trail, NC

    The hinges don"t come with the door mounting clips..they are worthless at this point... Can you help me out?

    This review is about similar Blum Hinges. (BA22K2500)

    Was this review helpful? yes no

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Reviews about us...

  • 5 of 5 | June 8th, 2026

    Found exactly what I needed and it was delivered quickly.

  • 5 of 5 | June 8th, 2026

    We had a problem with our order and they responded immediately. Their parts are top notch.

  • 5 of 5 | June 8th, 2026

    Ordered on Thursday receieved Saturday unexpectedly way early! Great operational sales support

  • 5 of 5 | June 8th, 2026

    Fast delivery and great price on the specific parts I couldn't find anywhere else.

  • 4 of 5 | June 7th, 2026

    The drawer pulls are good quality and have a nice finish, but the quality of the long fasteners is very poor. The hardware is made so can be cut easily but the threads are very poor and cross thread easily. I will have to buy better fasteners, I don’t see

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