4. Rack installation connecter

3. Bearing prevent: coopersleeve or nylon Sleeve

2. Rack and pinion: curved or directly rack, nylon or cooper sleeve for the pinion

1. Gear motor : 550W/750W

Choose the right location for your cold frame. To be able to maximize warmth and sunlight and your cold frame, choose an optimal location to put your structure. Select a south-facing spot that provides lots of sunlight. Avoid areas near trees or other structures where snow or leaves can put on your cold framework. This may result in harm to your structure or sunshine blockage.
Allow ventilation on hotter days. An excessive amount of warmth is not always a good thing – and that’s the advantage of a cold body greenhouse. Since outdoor sunshine and temperature impact a cold frame’s internal temperature, easily change your cold frame during unseasonable warmth waves. During these occasions, open up your structure and allow sufficient airflow to provide plants preferred warmth without suffocating them.
Use your cold body for growing within your means. As mentioned previously, chilly frames are great for extending the developing season of cool-period vegetables in the springtime and winter season. When hardening off tender plants and seedlings, cold frames also enable an easier transition for plants from inside to outside. Stick to choices that survive within your location’s current weather range, not completely out-of-season plant types. The internal gear rack for automobile temperatures are only somewhat warmer and more managed than the outdoors. So, plant life should handle the highs and the lows of your region fairly well while protected in your cool frame.
The rack and pinion drive system is for the mult-span agriculture venlo greenhouse ventilation system, it can be used for the side window openingh or the roof widoiw opening system. The rack and pinion system move smoothly and dependable. and may be control automaticly.

Extend the growing season for cool-time of year crops. Because frosty frames provide a slightly warmer and more managed environment than external temperature ranges, these products help gardeners start plant life without worry of frost or frozen ground. Plants won’t be affected by unseasonably cold or warm weather we often encounter during springtime and fall. Chilly frames work great for cool-season plants because they can withstand the low evening temperatures.
Overwinter dormant vegetation. While a cold body greenhouse won’t enable tender plants to continue growing through wintertime, these structures can protect them during dormancy. When overwintering vegetation, minimize sunlight and keep maintaining adequate soil dampness. This ensures vegetation won’t attempt to develop but don’t completely dry out either.
Harden off delicate plants and seedlings. Cold framework greenhouses help plant life make the transition from indoor plants to outdoor vegetation. Whether you began seedlings in your house or a greenhouse, vegetation must gradually adapt to the change in temperature, sunlight, moisture, and exposure outside. With a cold framework, plants are controllably subjected to these adjustments, while still remaining sufficiently safeguarded. Once plants adapt to the climate alter in your cold framework, after that transplant them to your garden.
Cold frame greenhouses are not at all hard to use for just about any or all of the reasons in the above list. However, keep these few tips in mind to be able to maximize the benefits of your structure.