Comparison : Item # FT-14-050, Exposed/Open FT Series w/ Paper Element
Item # FT-14-075, Exposed/Open FT Series w/ Paper Element
Item # FT-14-100, Exposed/Open FT Series w/ Paper Element
Item # FT-15-050, Exposed/Open FT Series w/ Poly Element
Item # FT-15-075, Exposed/Open FT Series w/ Poly Element