4. Rack installation gear rack for Greenhouse connecter

3. Bearing block: 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 best location for your cool frame. In order to maximize warmth and sunlight as well as your cold frame, pick an optimal area to put your structure. Select a south-facing spot that provides lots of sunlight. Avoid places near trees or additional structures where snow or leaves can pile on your cold framework. This may result in damage to your structure or sunlight blockage.
Allow ventilation upon hotter days. Too much warmth isn’t always a good thing – and that’s the advantage of a cold body greenhouse. Since outdoor sunshine and temperature effect a cold frame’s inner temperature, easily adapt your cold body during unseasonable heat waves. Of these occasions, open your structure and allow sufficient airflow to give plants desired warmth without suffocating them.
Use your cold body for growing inside your means. As mentioned previously, cold frames are great for extending the developing season of cool-time of year vegetables in the spring and winter. When hardening off tender plant life and seedlings, cold frames also allow for a less strenuous transition for vegetation from inside to outdoors. Stick to choices that survive inside your location’s current environment range, not totally out-of-season plant types. The internal temperatures are just somewhat warmer and more controlled compared to the outdoors. So, vegetation should deal with the highs and the lows of your area fairly well while secured in your frosty frame.
The rack and pinion drive system is for the mult-span agriculture venlo greenhouse ventilation system, it can be used for the medial side window openingh or the roof widoiw opening system. The rack and pinion system move smoothly and reliable. and can be control automaticly.

Extend the season for cool-period crops. Because chilly frames provide a slightly warmer and more controlled environment than external temperature ranges, these models help gardeners start plants without worry of frost or frozen surface. Plants won’t be affected by unseasonably cold or hot weather we often encounter during springtime and fall. Cool frames work great for cool-season plants because they can withstand the lower evening temperatures.
Overwinter dormant vegetation. While a cold body greenhouse won’t enable tender plants to keep growing through winter season, these structures can protect them during dormancy. When overwintering plant life, minimize sunlight and maintain adequate soil dampness. This ensures plant life 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 vegetation to outdoor vegetation. Whether you began seedlings in your house or a greenhouse, plants must gradually change to the modify in temperature, sunlight, dampness, and exposure outside. With a cold body, plants are controllably exposed to these adjustments, while still keeping sufficiently guarded. Once plants adapt to the climate modify in your cold framework, then transplant them to your garden.
Cold frame greenhouses are relatively simple to use for any or all of the reasons in the above list. However, keep these few tips in mind to be able to maximize the advantages of your structure.