there are different kinds of doors that are made by the blast door manufacturers the doors are made of steel and concrete and have special locking systems so that they are not blown open by the blast the doors have special seals that can keep the blast from entering even the cracks of the doors

1. Protection From Nuclear Explosions By Underground Bunker For Sale
Protection against bomb blasts can be provided by underground shelters only. The shelters that
are built under the ground at a depth of three feet or more provide the occupants safety from
the gamma rays that can occur due to a bomb blast. The protection provided by the shelter is
directly proportional to the depth at which it is built. You can build the shelter underneath your
house in the form of a bunker. The companies that provide an underground bunker for sale can
meet all your requirements regarding blast doors, air filtration systems, escape hatches in case
of emergencies and other specifications.
Protection from blast
The gamma rays occurring from a nuclear explosion can burn and maim everything in its path.
To protect people from the gamma rays and the heat, special blast doors are required which
can stop the effect of the heat and rays from reaching the occupants.

2. There are different kinds of doors that are made by the blast door manufacturers. The doors
are made of steel and concrete and have special locking systems so that they are not blown
open by the blast. The doors have special seals that can keep the blast from entering even the
cracks of the doors.
Sale of shelters
The number of members in a family differs from household to household. The bunker has to be
built accordingly to accommodate every member with some space to spare. The bunker has to
comfortable for the time the occupants are confined to it. To make a bunker habitable for some
time, the underground bunker sale may comprise of many things such as air filtration systems,
blast doors, lighting fixtures, sleeping materials and many other things. It is safe for people to
remain underground for some time to avoid the effects of the nuclear fallout.

3. NorthWest ShelterSystem
94 Poor Lane, Sandpoint,
Phone: 208-2636027
URL:
http://www.northwestsheltersystems.com/