• Postural ergonomics and prolonged comfort: The monoblock design with flexible rear reinforcement follows the student’s movements, reducing muscle fatigue during classroom lessons.
• Active prevention of injuries and impacts: The fully rounded edges and non-slip texture of the polypropylene shell eliminate sharp corners, minimizing the risk of accidental trauma.
• Structural resistance and record-breaking stability: The chemical cycle with nano-ceramics and anti-corrosive microcrystalline bath increases the adhesion of the epoxy-polyester paint by 300%, protecting the frame from rust, scratches, and nicks.
• Logistical space optimization: The ability to be stacked up to 8 chairs allows school staff to quickly clear classroom floors, facilitating daily routine sanitization cycles.
• Total grip and protection of floors: The non-slip plastic feet mounted on each leg dampen dragging noises and prevent the formation of scratches or streaks on school floors.
• Quick and light movement: The transport handle integrated into the upper part of the backrest allows teachers and students to lift and reposition the chair with one hand effortlessly.
• Ready to use without assembly costs: The chair is delivered already fully assembled and factory-tested, eliminating downtime and costs associated with manual on-site assembly of components.

This size 4 school chair finds its optimal application in furnishing classrooms, computer labs, multimedia rooms, and canteens within primary schools, secondary schools, youth training centers, advanced playrooms, and study rooms. Thanks to a seat height calibrated at 380 mm and general dimensions of 41x40x69.5 cm, it represents the perfect tool to meet the needs of public and private educational institutions that require robust single-color seating, compliant with ergonomics regulations and ISO certified to guarantee long life under heavy continuous use conditions.

The h979_43 model is the correct choice when the furnishing plan for schools requires a robust, hygienic size 4 chair (380 mm seat) equipped with a steel frame treated with nano-ceramics to resist impacts and continuous wear. It proves far preferable to common cheap plastic chairs or chairs with non-passivated metal structures, as the increased thickness of the steel tube (up to 2 mm in the cantilever version) combined with the polypropylene shell with non-slip texture ensures anti-tip stability and 300% superior corrosion resistance. Choosing this seat means investing in safe and ISO 9001, 14001, and 14006 certified school furniture, designed with respect for the environment to ensure a long useful life in school departments.

Which dimensional parameters define size 4 of this school chair?

Size 4 identifies a chair with a seat height from the ground equal to exactly 380 mm. The total geometric dimensions of the chair include a width of 41 cm, a depth of 40 cm, and a maximum overall height from the ground of 69.5 cm, dimensions calibrated for use by primary and secondary school students.

What does the special treatment applied to the metal structure of this model consist of?

The metal structure, made of Ø 20 mm steel tube with a thickness of 1.5 mm for the 4-leg version, undergoes an advanced industrial finishing and protection cycle. This process involves an epoxy-polyester electrostatic powder coating preceded by a degreasing phase and the application of nano-ceramics via an anti-corrosive microcrystalline bath and a passivation process. This treatment improves the adhesion and resistance of the paint by 300% compared to traditional methods, protecting the chair from scratches and rust.

What ergonomic and safety measures are integrated into the polypropylene shell?

The monoblock polypropylene shell is designed according to strict school ergonomics criteria. It features a flexible rear reinforcement that follows the user’s movements, fully rounded edges to eliminate sharp contact points, and a non-slip surface texture that guarantees seat stability. Furthermore, the upper part of the backrest integrates a shaped handle that allows the chair to be grabbed and moved quickly and safely with one hand, supporting stackability up to 8 pieces.