current order:   $0.00
delivery surcharge:   $20.00

Alera MX4517 Merix450 Big & Tall Mid-Back Chair, Black

Item # 599440
  • Model:  ALEMX4517
  • Merix450 Series Big & Tall Mid-Back Chair
  • Capacity:  450 lbs 
  • Swivel, tilt
  • Black mesh
  • Each

Additional Features:

  • Aesthetically stylish for superior sitting experience for users up to 450 lbs
  • Breathable fabric mesh back with super cushioned mesh fabric seat
  • Integrated lumbar support encourages ideal back posture
  • Removable padded armrests offer soft support
  • Assembly required
  • Meets or exceeds ANSI/BIFMA standards
  • 25% pre-consumer, 5% post-consumer, 30% total recycled content


  • Adjustability:  360° Swivel, Integral Lumbar Support, Pneumatic Seat Height Adjustment, Tilt, Tilt Lock, Tilt Tension
  • Arms:  Yes
  • Arms Color:  Black
  • Arms Style:  Padded T-Bar
  • Back Size:  19 5/8"W x 26 3/4"H
  • Base/Frame Color:  Black
  • Base/Frame Material:  Steel
  • Base Style:  Five-point star with 2 1/8" hooded casters
  • Seat/Back Color:  Black
  • Seat Size:  23 1/4"W x 20 7/8"D
  • Upholstery Color:  Black
  • Upholstery Material:  Mesh
  • Overall Height:  39 1/8" to 42 3/4"
[Model ALEMX4517]
All prices listed are delivered prices from Costco Business Delivery. Merchandise can only be delivered to businesses within the greater Puget Sound, San Francisco Bay, Las Vegas, Los Angeles, San Diego, Phoenix and Atlanta metropolitan areas. Product availability and pricing are subject to change without notice.

Delivery orders under $250, before tax, will be charged a $20 delivery surcharge. Additional delivery fees may apply, including re-delivery charges if applicable. Enjoy next-business-day delivery (in most areas) when you place your order by 3 p.m. Orders placed after 3 p.m. will be processed the following business day. For additional questions regarding delivery, please call (800) 788-9968. products can be returned to any of our more than 500 Costco warehouses worldwide.