The SB72 is a more durable, rugged version of the popular MaxSeal pet doors by Security Boss. They are a superior sealing and insulating door, as well as the most secure when locked. Only the finest materials are use in the manufacture of the MaxSeal doors by Security Boss Manufacturing LLC.


SB72 models are designed to be maintained forever. This is the last pet door you will need to purchase for your dog. All components are manufactured so that the customer can easily replace, upgrade, or maintain all the main components.

The SB72 was designed specifically for two groups of customers: 1. Customers who lock their dogs OUTSIDE and have experienced chewing problems 2. Customers living in the extreme northern climates where temperatures get below -40 degrees farenheit.

This model features an insulated rigid flap that is clad on both sides with aluminum and reinforced with rugged aluminum framing channel. The quiet swing action makes this ideal for use in your home. The exterior flap has been designed to perform in harsh or extreme environments. The door components are all high grade aluminum that is naturally rust resistant. The heavy duty internal hinge is stainless steel, housed in custom brass bushings. Our insulated flap is comprised of an inner polycarbonate, air cell center that is clad in aluminum, and reinforced with customized framing on all sides. Embedded rare earth magnets along the bottom of the flap and bottom framing align to provide for positive closing every time. Replaceable weather stripping lines all sides of the swing door frame. The swing motion of the door is easy to use but not recommended for toy breeds or cats.

Security Boss SB72 Insulated Dog Door for Doors SB72 Door Model Fits doors 1 1/4" to 2" thick
Flap Size WxH (inches)	Pet Type Guide	Rough-Cut Required (wxh)	Exterior Frame Dimension (w x h)	Pricing
Medium 9" x 12"	Cavalier King Charles, female Pugs, Jack Russell	11" x 13 11/16"	12 3/8 x 15 1/16"	$293.99
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Large 11" x 16"	Cocker Spaniels, Shetland, Shar Pei, Wheaten Terriers, Whippets	13" x 17 11/16"	14 3/8 x 19 1/16"	$376.99
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Tall 11" x 20"	English Springers, Standard Poodles, Female Labradors, Samoyed, Dalmatians	13" x 21 11/16"	14 3/8 x 23 1/16	$414.99
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Wide Tall 15" x 20"	Large Male Labradors, Large Rottweilers, Ridgebacks	17" x 21 11/16"	18 3/8 x 23 1/16"	$531.99
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Mammoth 15" x 24"	Dobermans, Large German Shepherds, Landseers, Mastiffs	17" x 25 11/16	18 3/8 x 27 1/16	$573.99

Below 45 degree Environments
Chew Resistant Exterior Door
5 Sizes
Fits Doors 1 1/4" - 2"
Starts at $293.99

Pricing starts at: $293.99
Complete pricing chart at bottom of this page

5 Sizes for Larger Breed Dogs
Combination Flap Design - Vinyl & Rigid
For Extreme Northern Climates & Chewers