With neither vulnerable at IMP’s, you hold Spade GraphicA 6 5 4 3 Heart GraphicQ Diamond GraphicK T 6 5 4 Club GraphicK 7.
Your RHO, the dealer, opens 1 Heart Graphic. Your suit quality is poor, but partner will find it difficult to compete with length in the enemy suit. Since you play a wide-ranging Michaels treatment, you decide to show both suits with a call of 2Heart Graphic. LHO says DBL, showing a penalty interest somewhere. Partner and RHO pass.

What is your call?