
Divider Metal (I don't know, steel, aluminum or both), the ring is definitely plastic - even says it on the side of the box. Foam is cheap open cell stuff. Easily deformable, therefore often does not fit perfectly in the ring. As long as you get it close, rotating the ring back and forth a bit will usually slide it into place (you may need to pull the baffle down a bit to relieve the pressure on the ring). Just two springs to keep it in place. and they were a bit long for my mounts so I had to use unused screw holes on the top of the mount instead of the normal spring mounting points on the sides. Good quality overall, just wish everything was metal and had three or four springs.

Claoner Outdoor Solar Motion Lights - 8 Pack Security Lights With Motion Sensor, All Night Brightness Control, And Wide Angle Waterproof Wall Lights For Enhanced Visibility
49 Review

6 Pack Solar Garden Lights Outdoor Decorative 15 Lumen Metal Pathway Waterproof Warm White Landscape Lighting For Lawn Yard Patio Walkway Decor - LeiDrail
44 Review

Upgrade Your Lighting Game With Amico'S 12 Pack 6 Inch Smart LED Recessed Ceiling Lights - RGBCW, WiFi Controlled And Voice-Activated With Alexa & Google Assistant!
57 Review

LEONLITE 12-Pack 3W LED Landscape Pathway Light, 12V AC/DC Low Voltage CRI90+ IP65 Waterproof Non-Dimmable ETL Listed Bronze Aluminum 3000K Warm White
54 Review

β‘οΈ Sunpark LC-12014T (1) FC12T9 32W Circline (1) 2D 38W (1) FC16T9 40W Circline (1) FC9T9 30W Circline Lamp Compact Electronic Fluorescent Ballast with Circline Lamp Plug 120V
7 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

Wireless Electronic Ballast Interface Certified
8 Review