▁the ▁door ▁to ▁the ▁closed ▁position , ▁power ▁is ▁restored . ▁ ▁Reb ated ▁doors , ▁a ▁term ▁chief ly ▁used ▁in ▁Britain , ▁are ▁double ▁doors ▁having ▁a ▁lip ▁or ▁overlap ▁( i . e . ▁a ▁Rab bet ) ▁on ▁the ▁vertical ▁edge ( s ) ▁where ▁they ▁meet . ▁Fire - rating ▁can ▁be ▁achieved ▁with ▁an ▁applied ▁edge - guard ▁or ▁ast rag al ▁m old ing ▁on ▁the ▁meeting ▁st ile , ▁in ▁accord ance ▁with ▁the ▁American ▁Fire ▁door . ▁ ▁E volution ▁Do or ▁is ▁a ▁track less ▁door ▁that ▁moves ▁in ▁the ▁same ▁closure ▁level ▁as ▁a ▁sl iding ▁door . ▁The ▁system ▁is ▁an ▁in vention ▁of ▁the ▁Aust rian ▁artist ▁K lem ens ▁T org g ler . ▁It ▁is ▁a ▁further ▁development ▁of ▁the ▁ ▁that ▁normally ▁consists ▁of ▁two ▁rot atable , ▁connected ▁pan els ▁which ▁move ▁to ▁each ▁other ▁when ▁opening . ▁ ▁App lications ▁▁ ▁Arch itect ural ▁doors ▁have ▁numerous ▁general ▁and ▁special ized ▁uses . ▁Do ors ▁are ▁generally ▁used ▁to ▁separate ▁interior ▁spaces ▁( clos ets , ▁rooms , ▁etc .) ▁for ▁convenience , ▁priv acy , ▁safety , ▁and ▁security ▁reasons . ▁Do ors ▁are ▁also ▁used ▁to ▁secure ▁pass ages ▁into ▁a ▁building ▁from ▁the ▁exterior , ▁for ▁reasons ▁of ▁climate ▁control ▁and ▁safety . ▁ ▁Do ors ▁also ▁are ▁applied ▁in ▁more ▁special ized ▁cases : ▁ ▁A ▁Bl ast - proof ▁door ▁is ▁constructed ▁to ▁allow ▁access ▁to ▁a ▁structure ▁as ▁well