1) Uyilo olulodwa lobuhle: Iglasi yeprofayile ye-U, enemilo yayo eyahlukileyo, ibonelela ngamathuba amatsha kuyilo loyilo. Iigophe zayo ezintle kunye nemigca egudileyo inokongeza ingqiqo yanamhlanje kunye nezobugcisa kwisakhiwo, isenze sibe nomtsalane ngakumbi kwaye sibe nefuthe.

I-2) Ukusebenza okugqwesileyo kokugcina amandla: Iglasi yeprofayili ye-U ithatha itekhnoloji yemveliso ephezulu kunye nemathiriyeli kwaye inokusebenza kakuhle kwe-thermal insulation. Ubume bayo obukhethekileyo kunye noyilo lwesakhiwo lunceda ekunciphiseni ukuhanjiswa kobushushu kunye nelahleko, ngaloo ndlela ukunciphisa ukusetyenziswa kwamandla kwisakhiwo kunye nokufezekisa injongo yokugcinwa kwamandla kunye nokunciphisa ukukhutshwa.

I-3) Ukusebenza kokukhanya okugqwesileyo: Iglasi ene-U iqokelela ngokufanelekileyo kwaye isasaze ukukhanya kwendalo, okwenza indawo yangaphakathi iqaqambe kwaye ikhululeke ngakumbi. Kwangaxeshanye, ukusebenza kwayo kokuhanjiswa kokukhanya kukwangcono kuneglasi yemveli, ibonelela ngamava abonwayo angcono ukuze abantu bakwazi ukonwabela ukukhanya kwelanga ngaphakathi.

I-4) Ukusebenza okuqinileyo kolwakhiwo: Iglasi emise okwe-U yomelele kakhulu kwaye izinzile kwaye inokumelana noxinzelelo olukhulu lomoya kunye nomthwalo. Uyilo lwalo olukhethekileyo lweprofayili lukwandisa indawo yokudibanisa phakathi kweglasi kunye nesakhelo, ukuphucula ukuzinza kunye nokhuseleko jikelele.

I-5) Ukugcinwa kokusingqongileyo: Kwinkqubo yokuveliswa kweglasi ye-U, izinto eziphathekayo kunye neenkqubo ezinokunciphisa impembelelo yendalo. Kwangaxeshanye, ukusebenza kwayo okugqwesileyo okonga amandla ikwanceda ekunciphiseni ukukhutshwa kwekhabhoni yezakhiwo, ihambelane nendlela yophuhliso lwezakhiwo eziluhlaza zanamhlanje.

I-6) Ufakelo olulula kunye nokugcinwa: Uyilo lweglasi e-U-shaped lwenza kube lula ngakumbi kwinkqubo yokufakela, ukunciphisa ixesha lokwakha kunye neendleko. Ngexesha elifanayo, ngenxa yobungcali bezinto zayo, ukucoca, kunye nokugcinwa kulula, ukunciphisa iindleko kunye nobunzima bokugcinwa kamva.

Ukushwankathela, iglasi ye-U-profile ibe yinto eyimfuneko kuyilo loyilo lwezakhiwo zanamhlanje ngenxa yoyilo olukhethekileyo lobuhle, ukusebenza okuphezulu konga amandla, ukusebenza kakuhle kokukhanya, ukuqina kolwakhiwo, uzinzo lokusingqongileyo, kunye nokufakwa lula kunye nokugcinwa.