Uff da, Oy vey, Ay caramba, OMG. They weigh 132 lbs each. There are eight of them, all stacked in in a sturdy, but Machiavellian designed miniature prison located under the main salon. Accessible only via a small hatch, I can't imagine the pain level the original installer must have endured to install them. I can for sure tell you about my pain in removing them. I felt like I had entered one of these "World's Strongest Human" contests. You've seen these shows. Immense men pulling locomotives with their teeth, hoisting huge boulders onto pillars, and carrying cars around.
