It is structured with durable rust-resistant steel tubes that will make portable last through the seasons. It is also designed with zippered roll-up door for easy access and screened ventilation for optimum air circulation. Ideal for starting seedlings, protecting young plants and for extending the plant growing season. Product Specifications: Frame Material: Powder-Coated Steel Tube Top Material: Durable PVC Dimensions: 2 Layer(69X49X95CM),3 Layer(69X49X125CM),4 Layer(69X49X158CM) Color: Transparent Weight: 2 Layers 3.1Kg, 3 Layers 4.1Kg, 4 Layers 5Kg Feature: - Cold protection - Zipper Design for Easy Ventilation - Rust Resistant Frame - Small Footprint -Freestanding Design, Portable for Placing at Anywhere -UV Protected PVC Cover Package Includes: 1x PVC Cover 1x Accessory Kit Need simple building If you have any questions, please contact us and we will get back to you within 24 hours.