Ho an’ny varavarankelin’ny afo vy dia tsy tokony ho latsaky ny 10mm ny fifandimbiasan’ny fantson-drano sy ny tobin’ny varavarana, ary tsy tokony hihoatra ny 4mm ny elanelana eo amin’ny andaniny roa eo amin’ny fantson-drano sy ny tobin’ny varavarana.

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mampihena ny varavarana afo 90 minitra,3 ora naoty varavarana,varavarana ivelany voamariky ny afo misy fitaratra,counter fire shutter,36 x 36 tontonana fidirana naoty afo,mampihena ny varavarana afo 90 minitra,varavarankely sy varavarana misy afo,counter fire shutter,300 × 300 afo naoty tontonana fidirana,mampihena ny varavarana afo 90 minitra,varavarana misy afo acoustic,3 ora naoty varavarana,varavarana tokana tokana misy afo,counter fire shutter,varavarana naoty misy afo,3 ora naoty varavarana