90 Pound Heavy-Duty Extension Garage Door Spring 2-Packs ke lisebelisoa tse atolositsoeng tsa selemo bakeng sa mehloli e atolositsoeng ea mamati a karache e robehileng bakeng sa mamati a bolelele ba 7′.Liliba tsohle tse atolositsoeng tsa menyako ea karache ea WangXia li entsoe ka kopano ea terata e futhumetseng ea oliASTM A229'me li etselitsoe bonyane ba 10,000 mamati a bulehileng le a koalang.Lipheletso tse nang le looped tse peli ke tse tloaelehileng ho eketsa matla a ho hanyetsa habeli.