GJB2805B - 2021 Ventilation Door

Performance Requirements

• Airtightness Performance: The airtightness of the ventilation door must meet the Grade 8 requirement of the GB/T7106-2019 standard, meaning the air infiltration rate per unit area is ≤1.5 m³/(m²·h) under a pressure of 10 Pa.

• Watertightness Performance: The watertightness can achieve the Grade 6 requirement of the GB/T7106-2019 standard, preventing rainwater and other liquids from seeping in.

• Wind Resistance Performance: The wind resistance performance can meet the Grade 9 requirement of the GB/T7106-2019 standard, enabling it to withstand strong wind pressure.

Material and Structure

• Door Frame and Door Leaf: The main frame of the door is generally made of steel profiles, providing sufficient strength with firm and reliable welding. The thickness of the door leaf is typically no less than 4 mm.

• Insect Screen: Usually made of 10×10×1.5 mm galvanized steel mesh or stainless steel mesh profiles.

• Grille Design: If the ventilation window includes a grille, it should be constructed from 16×16 mm square steel profiles, with individual grid dimensions not exceeding 250×60 mm or 120×130 mm, and welded using a staggered vertical-long and horizontal-short equal division method.

Protection Functions

• Insect, Bird, and Rodent Prevention: Ventilation openings are typically equipped with structures such as insect screens and grilles to effectively block insects, birds, and rodents from entering the interior.

• Moisture and Dust Prevention: Good sealing performance and the use of moisture-resistant materials prevent stored goods from getting damp and keep dust from entering the warehouse.

• Fire, Theft, and Explosion Prevention: Some ventilation doors are equipped with fire, theft, and explosion prevention features, enhancing warehouse security.

Installation Requirements

• Mounting Method: The ventilation window frame is fixed to the wall using expansion bolts ≥12 mm (spaced ≤500 mm apart) or by welding to pre-embedded steel plates, ensuring a secure connection between the window frame and the building structure to prevent overall disassembly.

• Sealing Treatment: Gaps between the window frame and the wall are filled with fire-resistant sealant, ensuring both airtightness and fire resistance.

Opening and Closing Methods

• Double-Leaf Swing Structure: Ventilation windows typically feature a double-leaf swing structure, with one leaf secured by a lockable latch on the interior side. This design facilitates easy opening and closing while providing excellent anti-theft and protective performance.

• Single-Leaf Door Structure: In some specific cases, ventilation windows may also adopt a single-leaf door structure.

Other Features

• Excellent Ventilation and Air Exchange: Equipped with ventilation openings or components such as louvers and ventilation fans, it enables air circulation between indoors and outdoors, expelling indoor humidity and harmful gases while offering certain filtration capabilities.

• Good Corrosion Resistance: The surface undergoes special treatments, such as phosphating and electrostatic matte spraying, providing excellent corrosion resistance. It can be used long-term in harsh environments like humidity, acids, and alkalis without rusting or corroding easily.

• Excellent Thermal Insulation Performance: Filled with thermal insulation materials, it effectively blocks heat transfer between indoors and outdoors, reducing energy consumption and maintaining stable indoor temperatures.