Umdwebo wesisekelo
Dweba umdwebo wesigaba
Indawo engaphansi
20
m
2
(
20000000
mm
2
)
Indawo ye-vent eyodwa
0.012
m
2
(
12272
mm
2
)
Indawo ephelele yama-vents
0.061
m
2
(
61359
mm
2
)
Inani lomoya
5
PC
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