Iphaneli yodonga lwesangweji ye-polyurethane enogwebu (16mm) yimveliso entsha edumileyo yokugquma.Ingasetyenziswa kwizakhiwo ezitsha nezindala.I-firproof, i-insulation yokushisa kunye nezinto ezintle zokuhlobisa isakhiwo.
Eli phaneli liqulathe umaleko wesithathu umaleko wangaphambili unombala ofakwe ishidi lentsimbi yegalvalume, eyona nto ingundoqo ilukhuni i-polyurethane enegwebu (i-insulation), umaleko ongasemva yifoyile ye-aluminiyam, le migangatho mithathu ibunjwe ngokwenziwa kwemizi-mveliso.