Gualala Light Rail Light Mover Rail Hanger Brackets for Greenhouses and Grow Tents Genuine Solidly Made in the USA Four to a package (one package needed per Rail) with zip tie and instr. Compatible with tubing up to 1.5 inches in diameter. Not compatible with LightRail 5.0. Recommended to use a one piece Rail, a Rail half or make a small wooded splint at the seam of a two piece Rail for extra strength at the seam for being suspended in a tent (see below). Only LightRail performs over many years with the power and endurance for any light at any weight. Keep it Real, Keep it LightRail; Solidly made in the USA since 1986.