Lutron Maestro Companion Multi-Location Dimmer Switch, Only for Use with Maestro LED+ Dimmer, White (MA-RR-WH) MA-RR-WH - The Home Depot
4-way switch problem - Wiring Discussion - Inovelli Community
Lutron Claro 4-Gang Standard Screwless Decorator Wall Plate, White/Gloss in the Wall Plates department at Lowes.com
Lutron Claro 4 Gang Wall Plate for Decorator/Rocker Switches, Gloss, Light Almond (CW-4-LA) (1-Pack) CW-4-LA - The Home Depot
electrical - 3 way dimmer on 4 way circuit - Home Improvement Stack Exchange
Lutron Maestro LED+ Dimmer Switch Kit with Companion Switch, 150W LED/3-Way or Multi-Location, White (MACL-153M-RHW-WH) MACL-153M-RHW-WH - The Home Depot
Lutron Maestro LED+ Dimmer Switch for Dimmable LED Bulbs, 150W/Single-Pole or Multi-Location, White (MACL-153MR-6-WH) (6-Pack) MACL-153MR-6-WH - The Home Depot
Lutron Maestro MACL-153M-WH Dimmer - White - Bees Lighting