4. Rack installation connecter

3. Bearing prevent: coopersleeve or nylon Sleeve

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

1. Gear motor : 550W/750W

Choose the best location for your chilly frame. In order to maximize warmth and sunlight as well as your cold frame, pick an optimal location to place your structure. Choose a south-facing spot that provides lots of sunlight. Avoid areas near trees or various other structures where snow or leaves can pile on your cold body. This may result in harm to your structure or sunlight blockage.
Allow ventilation upon hotter days. An excessive amount of warmth isn’t always a very important thing – and that’s the advantage of a cold body greenhouse. Since outdoor sunlight and temperature effect a cold frame’s internal temperature, easily adjust your cold body during unseasonable high temperature waves. During these occasions, open up your structure and invite sufficient airflow to give plants desired warmth without suffocating them.
Use your cold body for growing within your means. As stated previously, cool frames are great for extending the growing season of cool-time of year vegetables in the springtime and winter season. When hardening off tender plant life and seedlings, cool frames also enable an easier transition for plant life from inside to outside. Stick to choices that survive within your location’s current climate range, not totally out-of-season plant varieties. The internal temperatures are only slightly warmer and more controlled than the outdoors. So, plant life should handle the highs and the lows of your area fairly well while guarded in your chilly frame.
The rack and pinion drive system is for the mult-span agriculture venlo greenhouse ventilation system, it can be utilized for the medial side window openingh or the roof gear rack for automobile widoiw opening system. The rack and pinion system move smoothly and reliable. and can be control automaticly.

Extend the season for cool-season crops. Because chilly frames provide a somewhat warmer and more managed environment than external temps, these units help gardeners start plants without worry of frost or frozen ground. Plants won’t be affected by unseasonably cold or hot weather we often encounter during springtime and fall. Cold frames work ideal for cool-season plants because they can withstand the low evening temperatures.
Overwinter dormant plants. While a cold frame greenhouse won’t allow tender plants to continue growing through winter season, these structures can protect them during dormancy. When overwintering plant life, minimize sunlight and keep maintaining adequate soil moisture. This ensures plants won’t attempt to grow but don’t completely dry either.
Harden off delicate plants and seedlings. Cold frame greenhouses help vegetation make the transition from indoor plants to outdoor plants. Whether you began seedlings in your house or a greenhouse, vegetation must gradually modify to the alter in temperature, sunlight, moisture, and exposure outside. With a cold frame, plants are controllably subjected to these changes, while still remaining sufficiently protected. Once plants change to the climate change in your cold framework, then transplant them to your backyard.
Cold framework greenhouses are not at all hard to use for just about any or all the reasons in the above list. However, keep these few tips in mind in order to maximize the advantages of your structure.