A skylight construction 2 including {HEAD ~ a further gasket} extending from {TAIL ~ the operating leaf frame} and disposed between the operating leaf frame and covering means 
extending from
A skylight construction 2 including { HEAD ~ a further gasket } extending from { TAIL ~ the operating leaf frame } and disposed between the operating leaf frame and covering means
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH