- Small Flap is 6"w x 11"h
- Medium Flap is 8"w x 15"h
- Large Flap is 10"w x 19"h
- XL Flap is 12"w x 23"h
- Installs in walls 2" - 8" thick (up to 8 1/4" for Single Flap models and up to 8 3/4" for Double Flap Models)
- Magnets along three sides of the flap for improved wind resistance
- Flaps resist 50 mph winds and endures -40 degree temperatures
- Option of One or Two Flaps for most insulation or One insulation Flap on inside frame
- Durable, long-lasting, aluminum tunnel and aluminum frames
- Single flap recommended for cats and very small or timid dogs