Slim 1/2" Frame Makes This A Very Popular Door. Smooth Linear Frame Gives Your Opening A "Picture Frame" Look. Flexible Design Can Me Mounted As An Inside Fit Or Overlap. Door Is Also Offered With A "Cutback" Frame For A Minimal Frame Design. Please E Mail Us Your Fireplace Opening Dimensions For A Quote. Also Please Include In Your E Mail If You Require A Mesh Style Curtain Or A Gate Mesh Style Back Up Door.