Patio Pacific, Inc. Patio Pacific, Inc.: Pet doors for walls, doors and windows, screens, and sliding glass doors. Also sells containment systems and automatic feeding systems. (Enclosures) http://www.petdoors.com/
Highland Pet Supplies Highland Pet Supplies: Offering manual and electronic doors. Includes installation guides and door specifications. (Enclosures) http://www.doors4pets.com/
Dog Door Store Dog Door Store: Supplying a range of portal doors, crates, backpacks and travel bowls. Illustrated descriptions and specifications. (Enclosures) http://idealpetproduct.com/
Patio Door Accessories Patio Door Accessories: Offers a device to allow operation of sliding doors by animals wearing remote collars. (Enclosures) http://webhome.idirect.com/~petdoor/
A-Plus Pet Screen Doors A-Plus Pet Screen Doors: Allows pets access to the inside and outside of homes. (Enclosures) http://www.apluspetscreendoors.com/
Cat-Dog-Doors Cat-Dog-Doors: Offers pet doors, vehicle barriers, pet gates and flaps. (Enclosures) http://www.cat-dog-doors.com/
Friendly Fence Friendly Fence: Offers dog and cat fence kits, accessories, and installation tools. (Enclosures) http://www.friendlyfence.com
Pet Playpens Pet Playpens: Offers enclosed play areas and shelters. (Enclosures) http://www.petplaypens.com/
Pet Door Concepts Pet Door Concepts: Offers doors for walls, french doors and glass. (Enclosures) http://www.petdoor.us
Petdoors USA Petdoors USA: Allows exit and entry through walls, windows, screens, or patio. Also offers electric doors. (Enclosures) http://www.dogdoors.com/
Additional
Information: These may be fixed ( usually outside ) or portable ( usually for use indoors ).
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