Pet Doors
Want a doggie door but can't because you have a full light door.  Replace your door with a half light  door with room for a dog door in the bottom. 
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From this . . .
. . .to this.
For less than $500.. . .
Pet doors can be installed into many different places. (Doors, walls, garage doors).  Call Your Personal Handyman for a price estimate.
Pet door installed into:
Door - $95 **
Wall - $175 (non-masonry) **

** Pet door not included in price.