Solatube International Inc.
The SkyVault Series M74 DS features a 29-inch diameter opening to the sky and an amplifier which reorients daylight downward to increase optical efficiency; eases glare and reduces light loss at ceiling level; and focuses light downward in high bay applications for greater light availability at task level.
Protimeter: Aquant
Sensaphone: Sentinel PRO
KI: Passel
Sielox: AnyWare
Global Drain Technologies: 2000 T-Series Threshold Drain