Pet Door Dimensions

Below charts show the dimensions of the pet doors by brand. Find the suitable dog door based on the dimensions of pet door, flap opening, or frame.

PetSafe Pet Door Dimension, Cut Out Dimensions

Wall Entry Aluminum Pet Door
Size Width Height Flap Opening Metal Frame Plastic Outside Frame
Small 6-7/16" 10-1/8" 5" x 7" 7-3/4" x 10-3/4" 9.75" x 13/5"
Medium 9-5/8" 14-3/8" 8" x 11" 10-3/4" x 14-3/4" 12.75" x 17.5"
Large 11-7/16" 18-1/16" 10" x 15" 12-3/4" x 18-3/4" 14.75 x 21.5"
Freedom Aluminum Door
Size Width Height Flap Opening Frame-Outside  
Small 6" 9-5/8" 5-1/8" x 7-5/8" 7-7/8" x 11-3/4"  
Medium 8-13/16" 13-3/4" 8-1/8" x 11-3/4" 10-7/8" x 15-3/4"  
Large 10-15/16" 17-5/8" 10-1/8" x 15-3/4" 12-7/8" x 19-3/4"  
Extra Large 14-7/16" 25-1/8" 13-5/8" x 23" 16-3/8" x 27-1/4"  
Plastic & Extreme Pet Doors
Size Width Height Flap Opening Frame-Outside  
Small 6-5/8" 10-3/16" 5-1/8" x 7-5/8" 7-5/8" x 11-1/8"  
Medium 9-5/8" 14-3/16" 8-1/8" x 11-3/4" 10-5/8" x 15-1/8"  
Large 11-5/8" 19-1/4" 10-1/8" x 15-3/4" 12-5/8" x 20"  
Extra Large 15-1/8" 26-13/16" 13-5/8" x 23" 16-1/8" x 27-1/2"  
SmartDoor
Size Width Height Flap Opening Frame-Outside  
Small 8-3/8" 14-15/16" 6-5/8" x 7-15/16" 9-1/2" x 15-3/4"  
Large 15-3/8" 22-7/8" 13-1/16" x 15-3/4" 17-3/8" x 25"  
Staywell
Size Width Height Flap Opening Frame-Outside  
Big Cat
(200 Series)
10-1/4" diameter hole 7-1/8" x 7-1/2" 11-1/2" x 11-1/2"  
4-Way Locking
(300 Series)
6-1/2" x 6-3/8" or 8-3/8" diameter hole 6-1/4" x 5-1/2" 9-1/4" x 9-3/4"  
Magnetic Lock
(400 Series)
6-1/2" x 6-3/4" or 8-3/8" diameter hole 5-7/8" x 5" 9-1/4" x 9-3/4"  
Infrared Lock
(500 Series)
6-1/2" x 6-3/4" or 8-3/8" diameter hole 6-3/8" x 5-3/8" 9-1/4" x 9-3/4"  
Classic
Size Width Height Flap Opening Frame-Outside  
Small 5-13/16" 9-1/2" 5" x 7" 7-3/4" x 10-3/4"  
Medium 8-11/16" 13-1/2" 8" x 11" 10-3/4" x 14-3/4"  
Large 10-11/16" 17-1/2" 10" x 15" 12-3/4" x 18-3/4"  
Extra Large 14-3/16" 25-5/8" 13-3/8" x 23" 16-1/4" x 27-1/4"  
Quick Fit
Size Width Height Flap Opening Frame-Outside Notes
Small 5-15/16" 8-1/8" 4-1/4" x 7" 6-3/4" x 9-3/4" Discontinued
Medium 10-3/4" 14-3/4" 8" x 11" 12-1/8" x 17-1/2"  
Large 13-3/4" 19-3/8" 10.5" x 14.5" 15-3/4" x 23-1/4" Discontinued
Ultimate
Size Width Height Flap Opening Frame-Outside  
Small 7-7/16" 10-1/4" 4.25" x 7" 8-1/4" x 11"  
Medium 11-15/16" 15-5/8" 8" x 11.5" 12-3/4" x 16-7/16"  
Large 14-5/8" 20" 10-3/8" x 15.75" 15-1/2" x 21"  
Extra Large 17-15/16" 22-5/8" 13" x 13.5" 18-3/4" x 23-3/8"  
Cat Flaps
Model Name Flap Opening Frame-Outside  
CC10-050-11 Cat Flap 5-5/8"W x 6"H 7-1/2"W x 8"H  
CD10-050-11
P1-4W-11 Deluxe Cat Flap 5-5/8"W x 6-1/2"H 7-1/2"W x 8-1/4"H  
S1-4W-11

Ideal Pet Door Dimension, Cut Out Dimensions

Original Door
Size Flap Size For Pets
Small 5" x 7" Up to 12 lbs.
Medium 7" x 11"
Up to 35 lbs.
Large 9" x 15" Up to 75 lbs.
Extra Large 10 1/2" x 15"
Up to 100 lbs.
Super Large 15" x 20" Up to 200 lbs.
Deluxe Doors
Size Flap Opening For Pets
Small 5" x 7" Up to 12 lbs.
Medium 7" x 11" Up to 35 lbs.
Extra Large 10 1/2" x 15" Up to 100 lbs.
XX-Large 15" x 20" Up to 200 lbs.
Ruff Weather Doors
Size Flap Opening For Pets
Medium 8" x 13" Up to 35 lbs.
Extra Large 10 1/2" x 17" Up to 100 lbs.
Super Large 15" x 23" Up to 200 lbs.

Gun Dog House Door Dimension

Name Flap Size Frame
Easy Pet Door 11-1/2" x 15"
14" x 17-1/2"
Heavy Duty Door 12-1/2" x 17-1/2"
14" x 20"
Easy Big Dog Door 16-1/2" x 25-1/2" 18" x 26"
Big Dog Premium Door 16-1/2" x 25-1/2"
18" x 28"