Dimensions: Length730mm (extendable) x 560mm wide x 160mm high

•The frame is made of ABS engineering plastic mold, with PVC steel side panels and flip-top, UV-resistant, anti-aging, durable for long-term use.

• New double-door design, both doors open simultaneously, with adjustable opening status, free to regulate air volume, excellent performance.

• Added special insulation layer; both opening and closing can achieve a sealed state. Prevents heat loss when insulation is needed, with a tight sealing effect.

• Can be controlled automatically or manually.

• Suitable for factory buildings, greenhouses, and large-scale livestock farming facilities.