Specialty Recreation (SL2222C) Clear 22" x 22" Skylight

we planned to use this in place of a white skylight in our 2003 Aliner camper - so that we can watch some night sky stars from our bed. But the skylight seems thinner than is appropriate for a skylight to be used above human occupants.It arrived in a robust package, and included the promised tube of caulk-adhesive.the many screw holes around the edge were rough - not finished properly at all. End the four corner holes are too close to the edge - not robust.

I need to return it how do I need to return the item it does it fit

I can not give this a high review because it is so thin. Replacing a very thick unit. Just hope it holds up.