Ventilation openings are an important part of protected facilities because they must allow the movement of air while maintaining the required level of protection against external hazards. The BVNO 1000 Blast Valve is a normally open, dual-action automatic valve designed for ventilation systems in protected spaces. According to Shelter Shop, the valve allows air to move in and out of the protected space during normal operation and automatically closes the air opening when expo

Maintaining breathable air quality inside enclosed shelters is one of the most critical aspects of life-support engineering. During prolonged operation in lock-up mode, carbon dioxide (CO₂) generated by human respiration gradually accumulates and must be removed to maintain safe atmospheric conditions. The ARC CO2 4800L is a professional carbon dioxide removal system (scrubber) developed by Atmas Group specifically for civil defence shelters, bunkers and industrial protected

Modern civil defence shelters, bunkers and protected facilities require ventilation systems that maintain normal airflow while automatically protecting the protected space during a blast event. The BVNO 2900 Blast Valve is a normally open, double-action blast valve designed to automatically close under blast wave pressure, protecting the interior against both the positive and negative phases of a blast wave. According to the manufacturer, the valve is intended for ventilation

Modern civil defense shelters and protected facilities require ventilation systems capable of delivering stable airflow through filters, blast valves, ducts, and other high-resistance components. The EBL 180 High Pressure Ventilation Blower with Manual Backup is designed specifically for these applications, combining electric operation with a manual backup mechanism to maintain ventilation when electrical power is unavailable. Official product page:https://www.shelter-shop.co

The SU-III RWRT is a top-opening blast and gastight shelter hatch designed for protected facilities and civil defence shelters. According to the published product description, the hatch is designed for blast pressure of up to 440 kPa (4.4 bar) and is intended for horizontal, top-opening installation. Atmas Group The product is available with different clear opening dimensions and can be installed either during new construction or as a retrofit solution. SU-III RWRT — product

The DPG-A Differential Pressure Gauge is a mechanical instrument designed to measure and monitor differential pressure in protected shelter environments. According to the product description, the gauge is intended for monitoring the pressure difference between shelter compartments, such as the main shelter chamber and an airlock, as well as between a protected area and the outside environment. DPG-A Differential Pressure Gauge — Shelter Shop Differential pressure monitoring i

The Passive Shelter Antenna Set is a passive communication solution designed to help maintain radio and mobile-network connectivity in civil defence shelters, underground or hardened facilities, and other structures where concrete walls, metal construction or surrounding ground can make signal transmission difficult. According to the published product information, the system is designed to receive and reproduce radio and mobile-phone signals between the outside environment an