Pride Pet Doors are constructed with a strong extruded frame. The flaps are made of flexible heavy duty rubber that will not crack in winter or warp in summer. Magnets are imbedded into the durable rubber flaps to help keep the flap closed and eliminate drafts. The SD300 is for cats and small dogs. The opening is 4 3/4 inches x 7 1/2 inches, for your pet up to 4 1/2 inches across the shoulder. The pet door should be one half inch wider than the width of the pet’s shoulder.
1. Using the narrow aluminum frame as a template, mark and saw an opening.
2. Mark and drill holes.
3. Attach door with rubber side on the outside of house door.
4. The pet door is now ready, insert closing panel on the side facing pet when denying access.