351 D Box Ready Home Theater Seating are ready to deliver to your home theater. If you have questions about 351 home theater seats call us at 1-888-764-9273. On these styles our construction has been significantly beefed up to allow for all the stress that the D-Box motion puts on the frame. D-Box ready frames will have holes drilled in the frame and a bracket inside the arm to hold the electronics. Everything is ready for the installer to place the actuator inside the chair or loveseat.