If you are considering natural ventilation for your cold frame, high tunnel, ground to ground or gutter connected greenhouse Hummert International can design a roll up wall system to meet your needs. The advantages of natural ventilation for your greenhouse-growing environment are numerous and can be achieved with the Roll-Up/Lock Down Curtain Systems by Advancing Alternatives Inc. The Roll-Up/Lock Down Curtain Systems can fit any “straight” or “curved” wall – free standing or gutter connected greenhouse. Available in 4’ increments, systems can be manually operated or motorized with low voltage or line voltage motor drives. The patented Roll-Bar and Roll-Lock, locks down when closed and fully seals across the entire bottom. Optional auto inflation is designed to inflate two layers of poly and seals the ends of the curtain for added insulation, saving you energy and money!

Cold Frame, High Tunnel and Ground to Ground (1’ to 7’ Opening Curtain Systems)

Complete “free standing” curtain system includes Econoline Roll-Bar, Roll-Lock, Wirelock, inverted “V” pattern wind rope & attachments for end panels. Curtain systems are designed for single poly or double layer air inflated poly. Double layer poly curtain can be air inflated with optional Automatic Inflation Kit. Curtain system can be manual or motorized; operator packages & guide pipe ordered separately. Poly curtain, baseboard at eave & grade not included.

If you are considering natural ventilation for your cold frame, high tunnel, ground to ground or gutter connected greenhouse Hummert International can design a roll up wall system to meet your needs. The advantages of natural ventilation for your greenhouse-growing environment are numerous and can be achieved with the Roll-Up/Lock Down Curtain Systems by Advancing Alternatives Inc. The Roll-Up/Lock Down Curtain Systems can fit any “straight” or “curved” wall – free standing or gutter connected greenhouse. Available in 4’ increments, systems can be manually operated or motorized with low voltage or line voltage motor drives. The patented Roll-Bar and Roll-Lock, locks down when closed and fully seals across the entire bottom. Optional auto inflation is designed to inflate two layers of poly and seals the ends of the curtain for added insulation, saving you energy and money!

Gutter Connect - Sidewall Curtain Systems (Up to 8' Opening)

The “gutter connect” – sidewall curtain system is designed for straight side walls of free standing and gutter connected greenhouses with 8’ sidewalls with single and double layer poly. Double layer poly sidewalls and end panels can be automatically air inflated to reduce heat loss. The complete “gutter connect” system includes Econoline Roll-Bar, Roll-Lock, Wirelock and Wind rope. Manual or motorized operator packages, end panels not included, order separately. Poly curtain, gutter & baseboard not included.

If you are considering natural ventilation for your cold frame, high tunnel, ground to ground or gutter connected greenhouse Hummert International can design a roll up wall system to meet your needs. The advantages of natural ventilation for your greenhouse-growing environment are numerous and can be achieved with the Roll-Up/Lock Down Curtain Systems by Advancing Alternatives Inc. The Roll-Up/Lock Down Curtain Systems can fit any “straight” or “curved” wall – free standing or gutter connected greenhouse. Available in 4’ increments, systems can be manually operated or motorized with low voltage or line voltage motor drives. The patented Roll-Bar and Roll-Lock, locks down when closed and fully seals across the entire bottom. Optional auto inflation is designed to inflate two layers of poly and seals the ends of the curtain for added insulation, saving you energy and money!

Curtain Wall - 8' to 15' opening Sidewall Curtain Systems

Ideal for full access at the sidewalls without obstructions. Curtain Wall is designed for single layer covering and not intended for heated greenhouse application. The complete system includes center and bottom Econoline Roll-Bar cap with 1.315” swaged pipe roll-bar, WireLock and WP2W wind strapping. Optional manual or motorized operator packages. End wind panels and wind control methods are not included, order separately. Poly fabric & gutter not included.

• GCP5:1x1.3 – Gear Crank is a 5:1 ratio and operates “free standing” up to 5’ wide high opening, up to 144’ long curtains. Handle is used as a brake. Order guide pipe and curtain separately.
• GCP7:1Cx1.3 – Gear Crank is a 7:1 ratio with internal brake that opens up to a 7’ opening up to 96’ curtains. Package includes guide pipe hardware, 30” handbrace and adapter. Order guide pipe and curtain separately.
• GCP13:1x1.3 – Gear Crank is a 13:1 ratio with brake. Ideal for long curtains up to 240’. Includes 30” handbrace, guidepipe hardware and adapter. Order guide pipe and curtain separately.
• TM2/33Px1.3 – Tube Motor package includes counter weight, roller guide, guide pipe mounting hardware. Order guide pipe and curtain separately.