L & R Shelters offer Shelters and greenhouse kits from 17′ to 42′ wide at any length. Covers available in greenhouse poly or woven tarp. Shelters are suitable for Greenhouses, Animal housing, Boat and RV Storage, Equipment, Hay or General Storage, Salt/Sand or Aggregate Bin Covers. Engineered drawings provided for all our standard widths. * New Summer 2015* – upgraded design for heavier snowload!