Crossword clues for Horizontal timbers. 8 letters:SLEEPERSHorizontal timbers.STRINGERHorizontal timber.SILLHorizontal timberSTRETCHERSHorizontal timbers.INWALEHorizontal timber on an open boatSTRINGERSHorizontal timbers.SILLSHorizontal timbersLINTELSHorizontal door frame timbers.