Indwangu yokuvikela ilanga ye-Groeveve fiberglass yelukwe nge-PVC yengilazi enamandla amakhulu ehlanganiswe ngenqubo ekhethekile.Kunokuvuleka okuhlukile ongakhetha kukho, okufana no-1%, 3%, 5%, 10%.Phakathi kwazo, indwangu yokuvuleka engu-10% ingathola ukukhanya okuhle kwemvelo nokungafihli lutho, kodwa ukusebenza ngokumelene nemisebe yelanga kanye nokuxhopha kubi kakhulu.Ngokuvamile sincoma ukusebenzisa izindwangu ezinesilinganiso sokuvula esingu-10% kwezinye izikhombisi-ndlela zokuchayeka elangeni (njengasenyakatho).Izophinda isetshenziswe kwezinye izindonga zamakhethini engilazi ezinombala ukuthola ukukhanya kwemvelo okuhle kakhulu nokungafihli.
Ehlobo, kunezinhlobo eziningi zezindwangu zokuvikela ilanga ze-fiberglass ngenxa yenhlangano ehlukene, ukuvuleka nombala, ukukhetha izindwangu ze-fiberglass zokuvikela ilanga kudinga ukucabangela izinkomba ezimbili, okuyikhwalithi yendwangu ngokwayo kanye nemvelo yesicelo.Singanikeza ukuncoma okungcono kakhulu kumakhasimende ethu.