Pa Concertinaua ʻike ʻia he mea ikaika loa e kūʻē i ke komo ʻana i makemake ʻole ʻia e nā ʻenemi a me nā holoholona.Hiki i nā lau ʻoi a me ka hoʻolālā spiral ke paʻa i ka mea i manaʻo e hele a ma luna paha o ka uea concertina.
ʻO ka mea maʻamau, ʻo ka pā concertina ka hui ʻana o ka uea concertina a me ka pā kaulahao a i ʻole ka uea welded e ālai wale i nā kānaka a ʻaʻole e hōʻeha iā ʻoe (e nānā i ka Fig 1).ʻIke nui ʻia kēia ʻano pā concertina ma ka hale paʻahao, ke kahua mokulele, ka hale noho, ke aupuni a me ka ʻoihana kalepa.
ʻO kekahi ʻano pā concertina ʻo ia nā uea spiral concertina.Ma ka lima hoʻokahi, hiki iā lākou ke hoʻopaʻa ʻia i ka hale kila e hana i kahi pā palekana (e nānā i ka fig 2).Ma kekahiʻaoʻao, hiki ke hoʻokomoʻia me kaʻole o ke kila (e nānā i ka fig 3).