ards ▁wider ▁than ▁ 9 " ▁that ▁extend ▁the ▁full ▁height ▁of ▁the ▁door , ▁and ▁are ▁placed ▁side ▁by ▁side ▁filling ▁the ▁door ' s ▁width . ▁ ▁Led ges ▁and ▁bra ces ▁– ▁Led ges ▁extend ▁hor izont ally ▁across ▁the ▁door ▁which ▁the ▁bo ards ▁are ▁aff ixed ▁to . ▁The ▁led ges ▁hold ▁the ▁pl anks ▁together . ▁When ▁diag on ally ▁they ▁are ▁called ▁bra ces ▁which ▁prevent ▁the ▁door ▁from ▁ske wing . ▁On ▁some ▁doors , ▁especially ▁ant ique ▁ones , ▁the ▁led ges ▁are ▁replaced ▁with ▁iron ▁bars ▁that ▁are ▁often ▁built ▁into ▁the ▁h ing es ▁as ▁extensions ▁of ▁the ▁door - side ▁pl ates . ▁ ▁Led ged ▁and ▁b rac ed ▁doors ▁ ▁As ▁board ▁and ▁B atten ▁doors ▁ ▁Imp act - res istant ▁doors ▁ ▁Imp act - res istant ▁doors ▁have ▁rounded ▁st ile ▁edges ▁to ▁diss ip ate ▁energy ▁and ▁minim ize ▁edge ▁ch ipping , ▁scratch ing ▁and ▁dent ing . ▁The ▁formed ▁edges ▁are ▁often ▁made ▁of ▁an ▁engine ered ▁material . ▁Imp act - res istant ▁doors ▁excel ▁in ▁high ▁traffic ▁areas ▁such ▁as ▁hosp it als , ▁schools , ▁hot els ▁and ▁coast al ▁areas . ▁ ▁Frame ▁and ▁filled ▁doors ▁ ▁This ▁type ▁consists ▁of ▁a ▁solid ▁tim ber ▁frame , ▁filled ▁on ▁one ▁face , ▁face ▁with ▁T ong ue ▁and ▁Gro oved ▁bo ards . ▁Qu ite ▁often ▁used ▁extern ally ▁with ▁the ▁bo ards ▁on ▁the ▁weather ▁face . ▁