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Choosing the right arms is crucial for an optimal ergonomic setup. Use this guide to help you choose the best arms for your needs.

1.

Pick Your Adjustability

  • 1D — Height only
  • 2D — Height & Width (best everyday choice)
  • 3D — Height, Width + Pivot or Fore-Aft
  • 4D/4D+ — Height, Width, Pivot & Fore-Aft
2.

Measure Your Elbow Height

  • Sit in your current chair with arms resting relaxed and elbows near 90°.
  • Armrests should be level with your desk surface.
  • Measure seat to top-of-armrest — that’s your needed range.
3.

Find Your Match Below

Pick the required adjustability (Fixed, 1D, 2D, 3D, 4D) from Step 1, then use your elbow-height range from Step 2 to choose the right arms from the table below.

Arm availability can vary by product. Only arms shown in the Options section above are compatible with this chair.
Dimension Arm Model Type Features Min Height (approx. from seat pan) Max Height (approx. from seat pan)
Fixed KR48 Average height Fixed loop 9.75" 9.75"
1D BR2 Average height Width-only, loop design (BC only)
1D AR81 Average height Width-only, polished aluminum loop 8.25" 8.25"
1D JR77 Average height Height-only 8.25" 12.5"
1D JR77M Average height Height-only, Memosoft 8.25" 12.5"
1D JRBN Tall height Height-only, fold-back ballistic 9.25" 11.75"
1D JRPD Tall height Height-only, fold-back Memosoft (Police) 9.25" 11.75"
1D KR21 Average height Height-only, knob T-arm 8.5" 10.75"
1D KR23 Short height Height-only 6.5" 10"
1D KR25 Average height Height-only, natural grip 8.25" 11"
1D KR25M Average height Height-only, Memosoft natural grip 8.25" 11"
2D BR5 Average height Height + Width (BC only)
2D JR39 Average height Height + Width, forward slant 7.25" 11.5"
2D JR39M Average height Height + Width, forward slant, Memosoft 7.25" 11.5"
2D KR200 Short height Height + Width, removable T 6.25" 8.25"
2D KR200M Short height Height + Width, Memosoft removable T 6.25" 9"
2D KR100M Short height Height + Width, Memosoft removable T 5.25" 8"
2D KR300 Tall height Height + Width, tall T 7.75" 10.5"
2D KR300M Tall height Height + Width, tall Memosoft 7.75" 10.5"
3D AR485 Average height Height + Width + Pivot, polished aluminum 7.0" 11"
4D JR49 Tall height Height + Width + RP-45 pivot + Fore/Aft 8.75" 13"
4D JR59 Tall height Height + Width + RP-50 6-way Omni 8.5" 12.75"
4D JR69 Tall height Height + Width + RP-65 pivot/Fore-Aft 8.25" 12.5"
4D KR200-45 Average height Height + Width + RP-45 pivot/Fore-Aft 7.75" 10.5"
4D KR200-65 Average height Height + Width + RP-65 lockable top 7" 9.75"
4D+ KR200-50 Average height Height + Width + RP-50 Omni (4D+) 7.75" 10.5"
4D KR100-45 Short height Height + Width + RP-45 pivot/Fore-Aft 6.75" 9.5"
4D KR100-65 Short height Height + Width + RP-65 lockable top 6" 8.75"
4D+ KR100-50 Short height Height + Width + RP-50 Omni (4D+) 6.75" 9.5"
4D+ KR100-51M Average height Ultra mobility track arm, RP-51M, 360° pivot 7.5" 10.25"
4D KR300-45 Tall height Height + Width + RP-45 pivot/Fore-Aft 9.25" 12"
4D KR300-65 Tall height Height + Width + RP-65 lockable top 8.5" 11.25"
4D+ KR300-50 Tall height Height + Width + RP-50 Omni (4D+) 9.25" 12"
4D JR77-65 Tall height Height + Width + RP-65 pivot/Fore-Aft 9.5" 13.75"
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