Backrest Office Chair Specifications

The specifications of backrest office chairs vary significantly depending on the model and design, commonly covering aspects such as dimensions, adjustment functions, and materials. Below is a detailed analysis:

I. Differences in Specific Product Specifications

1. Herman Miller Sayl Classic:

   • Size Adaptability: Designed specifically for individuals with smaller builds, accommodating users as short as 1.55 meters in height. The overall chair back size is relatively small, making it suitable for office spaces with limited room or for users with a slender physique.
   • Backrest Design: Features an integrated single-back structure made of soft plastic, providing a sense of enclosure while avoiding the压迫感 (pressure sensation) of hard materials. The lumbar support is an optional accessory, but its actual support effect is limited, with most users reporting no need for additional selection.
   • Adjustment Functions: Supports forward tilt adjustment, allowing users to adjust the recline limit and resistance via a lever to meet different sitting posture needs, such as focused work or short breaks.

2. Deli 4905 Office Swivel Chair:

   • Basic Dimensions: The seat height adjustment range is 45-53 centimeters, accommodating users of different heights. The seat width is 50 centimeters, and the seat depth is 49.5 centimeters, providing ample sitting surface space. The backrest width is 44 centimeters, with a maximum recline angle of 120-155 degrees, catering to both office work and lunch break scenarios.
   • Additional Configurations: Equipped with a fixed headrest (height 16.5 centimeters) to support the neck. The armrests are of a fixed design. The overall appearance dimensions are approximately 6×49.5×91 centimeters (length×width×height), suitable for pairing with standard office desks.

II. Universal Size Standards (GB/T 3326-2016)

• Seat Height: For hard seat surfaces, 400-440 millimeters; for soft seat surfaces, 400-460 millimeters, to accommodate the impact of different materials on sitting comfort.
• Seat Depth: 340-460 millimeters, ensuring full support for the thighs and avoiding fatigue caused by悬空 (hanging in the air).
• Front Seat Width: ≥400 millimeters, providing sufficient lateral space to avoid a cramped feeling during prolonged sitting.
• Back Length: ≥350 millimeters, covering the area from the waist to the shoulders to maintain the natural curve of the spine.

III. Purchase Recommendations

• Users in Small Spaces or with Small Builds: Prioritize compact designs like the Sayl Classic to avoid occupying excessive space.
• Users with Multi-functional Needs: The recline angle adjustment and headrest configuration of the Deli 4905 are more suitable for scenarios requiring lunch breaks or frequent changes in sitting posture.
• Standardized Fit: If strict adherence to ergonomic standards is required, refer to the universal size parameters to ensure that key indicators such as backrest length and seat depth meet the comfort requirements for long-term use.