Fan covers OS3 - COVER in white or black for wall mounted fan from Ø 500 to Ø 710 mm Download technical drawing of OS3 870mm Download technical drawing of OS3 1000mm Download technical drawing of OS3 1500mm We offer filters for the covers OS3 MAX - COVER in white or black for wall mounted fan Download technical drawing of OS3 MAX 1000 Download technical drawing of OS3 MAX 1500 OS4 - COVER in white or black for wall mounted fan 1370 x 1370 mm Download technical drawing of OS4