The LUNOR PD access cover is concrete filled to add reinforcement (concrete filling is done after door is installed on site. This is because the concrete shelter wall has to be sufficiently set so as to fill the door leaf with concrete)
The door leaf in steel profile frame with rubber seal (NBC seal) on all sides and welded in to add more reinforcement and has removable lever locks on both sides and internal levers with locking pin against accidental opening, air blast and ground shock vibration. Generally opens toward inside, outside in special cases.
It has a 3 bar protection Designed and manufactured according to technical regulations of the Swiss Federal Office of Civil Defense, complete installation comes with purchase.
Protects against the following effects
Air blast from conventional or nuclear weapons effects
Impact from debris
Heat from fire and thermal radiation from atomic weapons
Nuclear radiation chemical and biological ware agents