Hello, I am selling a used X Rocker Gaming Floor Rocker Replacement Rear Speaker and Box. For Model # 51231. Box measures approximately 17" X 7" X 4". Speaker measures 6". From an early 2000s X Rocker. Speaker bezel is cracked in 3 different places but still holds the grille. Smoke and pet free home. ALL SALES FINAL. NO RETURNS. Thank you for looking at my listing.