automatic ball launcher for dogs-Petsafe HPA11-10988 Extreme Weather Door, Medium

Highlights:

• Door Size: Medium
  
• Pet Size: Up to 40 pounds
• Flap Opening: 8-1/8" x 12-1/4"
  
• Frame Dimensions: 10-1/2" x 15"
  
• Cut Out: 9-3/8" x 14"
  
• Maximum energy efficiency is 3.5 times higher than our single-flap pet doors
• 3-flap system offers protection from the elements
• Paintable plastic frame
• Fits doors 1-5/8" - 2-1/4" thick
• Easy do-it-yourself installation
• Snap-on closing panel included; additional closing panel (sold separately) can be used for added insulation