NO warranty Length- 1200 feet & 1800 feet validity:- 25 micron - 4-5 month Mark the rows in the field, prepare bedding for crop using manure/compost. Mix the manure thoroughly in the soil. Make sure the bed is flat and remove any kind of previous plants, weed or stones. Then install the mulch film by stretching evenly on the bed. Make a hold with sharp tool and start seeding or planting in the soil through holes.