Swiss shelters are required by law to use the PT-1 Armored Door for all outside shelter closures, whether they be military, business, private, or public facilities. The door will withstand a 500 lb. Mk 82 General Purpose Demolition Bomb exploding 4 meters away. While shrapnel will dig large pits in theconcrete door face down to the first layer of steel reinforcing bars the door will still maintain air tightness, integrity, and function normally. It will resist a nuclear shock wave to over 3 Bar incident overpressure (9 Bar, reflected).

Left, a Swiss citizen emerges from his residential basement shelter through a PT-1 Armored Door.

Above, doors are palletized for shipment at the factory in Switzerland. The thinner doors resting on top of the armored doors are called pressure doors. These are used to partition off sections of larger shelters during an attack in order to limit damage to one section of a shelter, should the shelter take a direct hit.

These doors are first cast into a concrete wall and allowed to cure for 2 weeks. Afler cure, the door leaf is formed and filled with 30 psi concrete through the holes provided on the upper edge of the door.

Due to the large volume of production of these fine doors, we can purchase these doors and ship them by boat to Canada for less than it would cost to make them locally. They come in several different sizes, single and double leaf formats.