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OM Seating  |  SKU: 7780

Office Master Paramount Medium Build Ergonomic Office Chair With Lumbar Support | 7780

$574.60

The Office Master Paramount Medium Build Ergonomic Office Chair with Lumbar Support (model 7780) is a versatile executive chair designed for long workdays. It blends robust adjustability with a breathable fabric back and targeted lumbar support for comfortable all-day seating.

Highlights

  • Pneumatic lift for quick, easy height adjustment to match your desk and posture
  • EZ back height adjustment aligns the lumbar support with your spine for targeted comfort
  • Tilt backrest and tilting seat support natural movement and posture shifts
  • Seat depth adjustment accommodates leg length and thigh support for prolonged sitting
  • Swivel and rocking tilt with a customizable tension knob deliver smooth, coordinated motion
  • Tilt lock lets you fix the chair at any angle for focused work or reclining
  • Fabric panel back promotes airflow while maintaining a clean, professional appearance
  • Adjustable lumbar support provides customizable lower-back comfort across users and tasks
  • Medium build frame designed to suit a wide range of body types without sacrificing style or support
  • Value-based pricing makes advanced ergonomic features accessible for executive environments

Shipping & Returns

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Dimensions

Model/Sku Office Master 7780
Overall Width 27"
Overall Height 39-48"
Back 18"w x 21"h
Seat 20"w x 17.5-20.6"d
Seat Height 17-22"
Carton Weight 48 pounds
Warranty 12 year limited

Chair measurements are approximate and are based on switching cylinder heights on otherwise the same chair, with the same base and casters. Arm dimensions are approximate as actual measurements will vary depending on a variety of factors: cushion contour(s), seat upholstery, memory foam, etc.

More information about 7780 Fabric and Arms selection is available on the 7780 Options Library page

Downloads

Assembly: Assembly_Instructions_Paramount-Series.pdf Brochure: Brochure_Paramount_Series.pdf
Certificate: Certificate_Paramount_Series.pdf
Disassembly: Disassembly_Recycling_Instructions_Paramount-Value-4.pdf

General Warranty

Warranty

Office Master, Inc. (OM) warrants to the original purchaser that its products are free from defects in materials and workmanship for the applicable warranty period, as indicated below. 

Should any item fail, OM will – at its sole discretion – repair or replace, with a comparable product or part, any item found to be defective as a result of normal commercial use (i.e., a single 8-hour shift, 5 days per week).

This warranty does not apply to items subjected to abuse, misuse, neglect, alteration, or damage caused by shipment, storage, accident, fire, flood, or act of God.

Note: the actual warranty terms are specified on the chair product page. 

lifetime limited warranty:

The OM5 Series® (including the OM5 Active sub-series), Truly.® Series, and Ginny are covered by a lifetime limited warranty on all structural components as defined below.

12-year limited warranty:

Unless otherwise specified, all models not classified as budget or 24/7 or heavy-duty are covered under a 12-year limited warranty on all structural components as defined below.

7-year limited warranty:

Unless otherwise specified, all models classified as budget or 24/7 or heavy-duty or bariatric are covered under a 7-year limited warranty on all structural components as defined below. Budget series include: BC, SG, ST, and WS. Bariatric series includes: GY4B-26 and GY4B-30.

warranty terms:

Within a given model’s applicable warranty period, all structural components, including gas cylinders, wood, metal and plastic parts (i.e., chair frames, bases and control handles) are guaranteed against structural failure when under normal commercial use. All OM seating comes with a default 275 lbs. weight capacity limit unless otherwise specified by OM. 

For all models, consumable items (i.e., casters, glides, etc.) are covered by a 5-year normal commercial use warranty.

fabrics and foam:

OM in-stock upholstery & foam cushions are covered by a 5-year normal commercial use warranty. Normal wear and tear on fabrics such as wrinkling, dirt accumulation or gathering is not covered. This includes Truly.® Series “Jackets” and “Wraps”. Natural, minor variations may exist in color, surface, grain or texture of upholstery materials. As a result, any such variations are not warranted. COM/COL and graded-in fabrics are not covered.

warranty labor:

This warranty exclusively covers the repair or replacement of OM parts as determined by OM and does NOT cover any portion of field labor or service and does NOT cover any portion of field labor or service. For information regarding OM’s non-warranty shop time and related charges, please reference a current copy of OM’s pricebook, in the Terms and Conditions section.

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