Features: * Contains fifty 1-3/4 in. square cells in 1 Jiffy-Strip * 11 in. x 22 in. reusable tray and dome made from recyclable plastic * Clear dome maintains greenhouse humidity and temperature for healthier seedlings * 100 percent biodegradable peat pot strip made of Canadian sphagnum, peat moss, and wood pulp What"s In The Box: * Jiffy Products 5029 Greenhouse Seed Starter Strip