Introducing The Solatube-Tulsi Hybrid Indoor Solar Cooking Oven Being a solar energy advocate, I'm always thinking of new ways to promote solar products. The other day, while checking-out the Tulsi-Hybrid Solar Cooking Oven website, I had a great idea, why not combine the Solatube with the Tulsi-Hybrid Solar Oven to create a whole new world of convenient, pollution free indoor cooking. Solatube "Daylight Dimmer" tubular skylights are available in 10" (250mm), 14" (350mm) and 21" (530mm), residential and commercial applications. Solatube International, Inc.: The Sun BD Corporation: