Sur-Seal DM-FI5257347315x1 80-D Defiant Mark Filter, 14" Width x 14" Height x 1 Depth Mechanical MERV8 filter exceeds ASHRAE standard 62 air cleaning specifications for filters installed upstream of cooling coils. Air flow capacity listed at 300FPM Low initial resistance for energy savings, quality Engineered, Consistently Produced, made of 100 percent synthetic fibers Two Piece frame construction - will not rack, warp, or bend under normal handling or operating condition; Pleats hold together even when wet! No delaminating, No excessive buckling, No collapsing Support grid is made of Galvanized steel; PVA adhesive is not affected by mold or Microbial growth; moisture resistant Actual size: 13.75 Height x 13.75 width x 0.75 thick, nominal size 14 Height x 14 width x 1 thick