Petsafe Classic Pet Door

• Dimensions: Small: Flap Size W7" x L5" Cut Out Size W9.5" x L5.75"
  Medium: Flap Size W11" x L8" Cut Out Size W13" x L8.75"
  Large: Flap Size W15" x L10" Cut Out Size W17.5" x L10.75"
  X-Large: Flap Size W23" x L13.75" Cut Out Size W25.5" x L14"

Soft transparent single flap for maximum energy efficiency, ultraseal all weather, energy conserving flap system reduces energy loss in winter and summer. Grip-trak insulated, locking security cover is the strongest and most secure available telescoping adjustable frame creates its own protective inner frame in doors from 1/16 inch to 2 inch, may also be installed in walls. Adjustable sill with extra strong magnets hold the flap in place for a tight weather seal. Insulating, non-rusting security cover has dual locking pins (except small) to prevent removal of the security cover from the exterior. See-through flap design aids in training. Holds pets up to 12 lbs

, plus transit time