public Rack(Battens battens, LRpanel lrpanel, UDpanel udpanel, BackPanel backpanel,
FBCrossbar fbcrossbar, LRcrossbar lrcrossbar, AngleBar anglebar, Door door = null)
{
this.battens = battens;
this.lrpanel = lrpanel;
this.udpanel = udpanel;
this.backpanel = backpanel;
this.fbcrossbar = fbcrossbar;
this.lrcrossbar = lrcrossbar;
this.anglebar = anglebar;
this.door = door;
}