Build a rock-solid foundation for your Cal King bed with Hollywood Bed Frame's Bolt-On Bed Rails and Center Supports — engineered in the USA from recycled railroad steel for unmatched strength, stability, and environmental responsibility. Designed to integrate seamlessly with your existing furniture, these heavy-duty bed rails provide the structural backbone your mattress and frame need for years of reliable, creak-free performance. The center supports are included to ensure even weight distribution across the full width of your Cal King setup, preventing sagging and maximizing the life of your mattress. Each component is precision crafted for easy assembly and a secure, lasting fit. As part of Hollywood Bed Frame's trusted accessory lineup, these rails are compatible with other Hollywood products and can be conveniently combined with additional purchases for streamlined shipping. A smart, durable, and sustainable investment in the long-term performance and comfort of your bedroom.