Center-Pivot Roof Windows

Center Pivot Roof Window (GGU)

GGU Size Code CK02 CK04 CK06 FK04 FK06 FK08 MK04 MK06 MK08
Outside frame (W"xH") 21 5⁄8 x 30 5⁄8 21 5⁄8 x 38 1⁄2 21 5⁄8 x 46 3⁄8 26 x 38 1⁄2 26 x 46 3⁄8 26 x 55 30 3⁄4 x 38 1⁄2 30 3⁄4 x 46 3⁄8 30 3⁄4 x 55
Rough opening /
Finished frame (W"xH")
22 1⁄8 x 31 1⁄8 22 1⁄8 x 39 22 1⁄8 x 46 7⁄8 26 1⁄2 x 39 26 1⁄2 x 46 7⁄8 26 1⁄2 x 55 1⁄2 31 1⁄4 x 39 31 1⁄4 x 46 7⁄8 31 1⁄4 x 55 1⁄2