bedCLAW No-Sag Mattress Slats Center Support - Universal Size Adjusts from Full to Cali-King

What is the name of this type of center support beam attachment for a metal side rail bed? : r/HelpMeFind

California King Size Mattresses

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bedCLAW No-Sag Mattress Slats Center Support - Universal Size Adjusts

Universal Bed Slats Center Support System Adjustable Tubular Steel wit – SHANULKA Home Decor

Baxton Studio Regina Modern Rustic Ash Walnut Brown Finished Wood Queen Size Platform Storage Bed with

King Bed Slats

King Bed Slats

bedCLAW No-Sag Mattress Slats Center Support - Universal Size Adjusts from Full to Cali-King

bedCLAW No-Sag Mattress Slats Center Support - Universal Size Adjusts from Full to Cali-King Width, Height Adjustable from 4 to 15

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Bedbeam II™ Replacement Support Frame – City Mattress, 57% OFF

King Size, High Profile Fits Lip Heights 7.5” – 17” Super Duty Center Support Bars (Height Range To The Top of Wood Lip Inside of Wood Side Rails

STLBEDS Heavy Duty High Profile Universal Bed Slats Center Support System for Wooden Beds Holds 1400 pounds King Size