Mantua Replacement Slat Support System for Wood or Metal Beds, Metal Bed Slat System, Connects with Wooden or Metal Bed Rails A DURABLE ALTERNATIVE: Replace flimsy wood slats with more reliable metal slat support. EXCEPTIONALLY STRONG: Made of heavy-duty steel for your peace of mind. FITS MOST BED SIZES: For use with full, queen, king, and California king bed frames. NOTE: ALL BED FRAMES, RAILS, HEADBOARD, or FOOTBOARDS SOLD SEPARATELY. FULL SUPPORT: Youll receive 6 slats that create 3 cross support, bracing the top, middle and bottom of mattress. Cross supports attach to bed rails. ADJUSTABLE HEIGHT: Adjusts for heights of 6-14 inches.