{HEAD ~ The frame means} may comprise {TAIL ~ a base frame} and an operating leaf frame and the frame means may further comprise at least one flexible gasket integrally formed with the plastic profile 
comprise
{ HEAD ~ The frame means } may comprise { TAIL ~ a base frame } and an operating leaf frame and the frame means may further comprise at least one flexible gasket integrally formed with the plastic profile
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH