Say Bro, If You Are Still In The Building Stage Of Your House???, Tell Me What You Are After, & Would Like To Accomplish, I Built House's For Over 20 Year's, & Went To A&M For 4 Year's To Get A Structure Engineering, & Design Degree. I've Built Hidden Room's Many Time's, But If You have A Card, Guess You Could Put It Where Ever!!,,,,,,,,,,,,But Holler At Me If You Would Like Me To Help???imp:imp:imp:imp:imp: