Same glass as your greenhouse
4 mm tempered safety glass in powder coated extruded aluminum, so the window matches the rest of the house.

An additional Roof Window for Royal Victorian Greenhouses is a great addition for your greenhouse for additional air circulation.
The roof window fits the Janssens Royal and Junior Victorian greenhouses. It is the same material as the greenhouse – 4mm tempered safety glass and powder coated extruded aluminum with stainless steel hardware and rubber gasket.
This is an amazing feature provided for Royal or Junior Victorian greenhouse owners who do not want to manually open their roof windows. The black tube is filled with special paraffin oil - which expands when the temperature reached around 72º and the piston will push the window open up to about 14". When temperature falls a heavy spring pulls the window closed. No electricity needed!
Installing the automatic opener requires 2 bolts to be inserted into the roof crossbar for the lower mount The upper mount will clamp onto the window profile (Shown to the right).
The Roof Window Wind Restraint kit System protects auto-openers from powerful wind gusts. Sometimes the Auto Window openers can be pushed to open due to heavy winds which could cause them to break. The Restraint Kit can provide a secure system that will protect it from breakage.
This kit contains Two 15" stainless steel cables with nuts & bolts that are good for only for one roof Window. This kit can be used for both Can be used with RIGA and Victorian Greenhouses.
🌳 Great to restraint roof windows in case of heavy winds.
🌳 Two 15" stainless steel cables with nuts & bolts
🌳 The Restraint Kit if for ONE roof window.
🌳 This kit can be used for both Can be used with RIGA and Victorian Greenhouses.
Exaco · Accessory
Why customers choose it
4 mm tempered safety glass in powder coated extruded aluminum, so the window matches the rest of the house.
Stainless steel hardware and a rubber gasket keep the window tight and weatherproof.
With the automatic opener, the window opens about 14" at around 72º and closes again as it cools, with no electricity.
The optional wind restraint kit uses two 15" stainless steel cables to keep the wind from forcing the window open.
The details
| Size | 29" x 33" |
|---|
| Glazing | 4 mm tempered safety glass |
|---|---|
| Frame | Powder coated extruded aluminum |
| Hardware | Stainless steel, with rubber gasket |
| Fits | Janssens Royal Victorian and Junior Victorian greenhouses |
|---|---|
| Shipping | Ships only with a greenhouse order |
| Automatic opener | Opens about 14" at around 72º, closes with a spring, no electricity |
|---|---|
| Wind restraint kit | Two 15" stainless steel cables with nuts and bolts, for one roof window |
Good to know
Can't find your answer? Our greenhouse specialists are happy to help you choose.
678-408-8222 Email usYes. Shipping is free. Locations with limited access, such as islands, are rare exceptions that may carry an extra fee, and we'll tell you before anything ships.
Yes. If you find the same greenhouse for less from an authorized dealer, call or email us with the offer and we'll review it.
Yes. Mulberry Greenhouses is an authorized retailer, so your greenhouse is covered by the full manufacturer warranty.