The fibrous sheets are preferably {HEAD ~ nonwovens} and the gypsum core preferably contains {TAIL ~ a fungicide} 
The fibrous sheets are preferably { HEAD ~ nonwovens } and the gypsum core preferably contains { TAIL ~ a fungicide }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL