This Single-Span Round-Arch Poly Tunnel Greenhouse is an economical and practical agricultural growing shelter. It is built with galvanized arched steel frames and covered by high-quality UV-resistant plastic film. This classic tunnel greenhouse is widely favored for growing vegetables, fruits, herbs and flowers, as well as seedling raising. It suits smallholder farms and commercial growers, delivering a simple yet effective protected planting space for seasonal and off-season crop production in various regions.

It features a smooth round arch design to help snow slide off and reduce wind pressure. The frame is made of hot-dip galvanized steel with great anti-rust performance. The transparent poly film has strong UV stabilization and good light transmittance. It can be equipped with side roll-up ventilation, insect net, shade net and drip irrigation kits. The structure is lightweight, standardized and pre-cut, allowing fast installation. Width, length and height can be adjusted to fit customers’ land and planting requirements.

This poly tunnel greenhouse optimizes the internal growing microclimate. It traps solar heat to keep warmth in cool weather and protects crops from frost damage. The roll-up side vents control humidity and temperature by natural airflow. It shields plants from heavy rain, strong wind, birds and many pests. It enables growers to start planting earlier and extend harvest seasons. It supports conventional soil planting, container cultivation and simple hydroponics for diverse crop choices.

We are a direct manufacturer that accepts custom orders with affordable factory prices. Compared with glass or multi-span greenhouses, this tunnel model has lower investment cost and easier maintenance. Our UV plastic film has a longer service life than ordinary film. We provide full accessory sets and clear assembly instructions. Bulk orders enjoy favorable discounts. It has low transportation cost and flexible layout, which is an ideal cost-effective greenhouse solution for global small and medium agricultural investors.