Easy Ventilation Adjustment Manual Film Roller for Greenhouses

Key Benefits:

✅ Smooth One-Person Operation: Easily roll/unroll heavy films (PE, PVC, insect netting) with our ergonomic crank handle – no ladders or straining needed.
✅ Ultimate Durability: Hot-dip galvanized steel core & components resist rust, chemicals, and UV damage for years of service.
✅ Precision Fit: Customizable lengths (4m-12m+) fit any greenhouse width. Adapts to round or square tubes (ø42mm, 48mm, 50mm standard).
✅ Secure Locking: Integrated locking pin holds film firmly at any position – withstands wind and prevents slippage.
✅ Low Maintenance: Sealed bearings and corrosion-proof design ensure worry-free performance season after season.

Technical Specifications:

• Material: Hot-Dip Galvanized Steel (ISO 1461 Standard)
• Tube Diameter: Standard 1.5″ / 48mm (Custom sizes: 42mm, 50mm available)
• Max Film Weight: 8 kg/m (Adjustable based on model)
• Gear Ratio: 1:3.5 (Optimal balance of speed & torque)
• End Fixings: Heavy-duty wall brackets included (galvanized)
• Handle: Foldable steel crank (360° rotatable for easy access)

1. Are You Factory ?
Yes, we are manufacturer for types of greenhouse for 15 years.
With professional engineer team for suitable greenhouse design, complete after-sale service and factory direct sale for you now!

2.How To Ensure The Quality Of The Products ?
A.We are golden supplier of alibaba and engaged in exporting for 10 years, goods had been exported to more than 40 countries and
got good reputation in worldwide market. Long-term and mutual-benefits cooperation is our management philosophy.
B.To confirm every batch goods is in good condition, our inspection department will examine and test the products thoroughly and
carefully before delivery. Necessary test and certification can be obtained as your request.

3.How About Packaging And Shipping ?
A.The goods is marked according to their name and parts, accessories into carton, pipes by bundle, all goods load into the
container directly(suggest you buy whole container so that we can drag the container to our factory and load well all goods).
B.Shipping port is usually Qingdao/shanghai, we can arrange the shipping for you after getting your compensation.

4.Is There Any Instruction Or Manual Guide Installation ?
A.Yes, English manual with drawing and video shipped together with goods for guiding your installation easily.
B.Engineer overseas guiding installation is available.
C.Your worker or engineer is welcomed to our factory for learning your greenhouse installation.