I have used many harness inserts and keep coming back to using branded inserts. They are strong, durable, will not break during installation and will not fail over time.
ENERLITES Elite Series Screwless Decorator Wall Plate Child Safe Outlet Cover, Gloss Finish, Size 3-Gang 4.68" H X 6.53" L, Unbreakable Polycarbonate Thermoplastic, SI8833-SV, Silver
31 Review
CAPMESSO Reusable Coffee Capsules: Refillable Originalline Pod, Compatible With Nespresso OriginalLine Machines (Upgraded Creamy Version - 3 Pod Set)
37 Review
Childproof Your Home With ENERLITES Elite Series Screwless Wall Plates - Dark Bronze (10 Pack)
37 Review
Grey And White Brick Wallpaper Peel And Stick - Self Adhesive Removable Wall Paper For Backsplash, Fireplace Decoration, And Shelf Lining - 17.7" X 393.7
34 Review
π Robertson 2P20132 Quik-Pak: 10 Fluorescent eBallasts for 2 F40T12 Linear Lamps, Preheat Rapid Start, 120Vac, 50-60Hz, Normal Ballast Factor, NPF, Model RSW234T12120 /A (Crosses to RSW240T12120 /B)
4 Review
π‘ High-Quality Advance ICN-4P32-SC Electronic Fluorescent Ballast: Ideal for 4 Lamps, 32W T8, 120/277V
3 Review
Robertson Worldwide ISL432T8HEMV AH 3P20160 120-277V 50-60Hz High Power Factor 4 F32T8 Linear Lamp Fluorescent eBallast
6 Review
Wireless Electronic Ballast Interface Certified
8 Review