Hollowed-out Office Chair Backrest

The installation, adjustment, materials, and price information for hollowed-out office chair backrests are as follows:

Installation Steps
The installation methods for hollowed-out office chair backrests vary by model. For the W05 hollowed-out model, align the backrest with the tray's holes, secure it with three 8x20 coarse screws, and add washers for enhanced stability. The installation process for the W930 hollowed-out model is more complex: first, connect the backrest to the tray using a keel, secure the keel to the backrest with four fine short screws, then fix the backrest to the tray with three 8×20 coarse short screws, and finally, snap on the decorative cover to complete the installation. Before installation, ensure that the screw specifications match the holes to avoid structural looseness due to mismatched parts.

Adjustment Features
The adjustment designs of both chair models are centered around ergonomic needs. The W05 model supports a wide-angle recline, allowing for a午休 (noon break) mode when paired with a wide footrest. The tray lever for adjusting the recline angle is located on the right side for easy operation. The W930 model offers multi-level adjustment features: the backrest automatically resets when pulled to its highest position; the reclining angle can be adjusted by pulling the handle outward and locked by pushing it inward; the knob controls the reclining resistance to accommodate users of different weights. For example, lighter users can reduce the resistance for easy reclining, while heavier users need to increase it for stability.

Materials and Design
Hollowed-out design is a typical feature of ergonomic chairs, with core advantages in breathability and long-term comfort. The hollowed-out structure reduces the contact area between the back and the chair surface, promoting air circulation and preventing discomfort from prolonged sitting. Some models incorporate dynamic lumbar support technology, using elastic materials or adjustable lumbar supports to fit the spinal curve. The support stability has been tested over time and effectively disperses lumbar pressure. Additionally, the chair back frames are mostly made of high-strength plastics or metals to ensure structural durability.

Price Reference
The price range for hollowed-out backrest computer chairs is wide, with home office chairs priced between ¥52 and ¥555, depending on the brand, feature configuration, and material grade. Basic models typically offer only basic adjustment features and are priced lower, while models equipped with advanced features such as dynamic lumbar support, multi-level recline, and resistance adjustment are priced higher. When purchasing, consider the usage scenario and budget comprehensively. For example, for long-term office needs, it is recommended to choose a model with more comprehensive features to enhance comfort.