Floor boxes made by OBO: frame cassettes and height-adjustable cassettes | OBO
Leviton Pop-Up Floor Box with 20 Amp, Tamper-Resistant Outlet, Brass PFTR2-BR - The Home Depot
Leviton PFUS2-MB Pop-Up Floor Box with Dual Type A, 3.6 USB Charger, 20 Amp Outlet, Black - - Amazon.com
Floor Pop up Outlet, Pop up Floor Outlet for Kitchen countertop, Electrical Floor Box with 20Amp Socket USB Chargers 5V4.8A,Waterproof Stainless Steel Cover Recessed Outlet Box - - Amazon.com