4. Rack installation connecter
3. Bearing block: 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 right location for your gear rack for automobile frosty frame. In order to maximize warmth and sunlight and your cold frame, pick an optimal area to put your structure. Choose a south-facing spot that offers plenty of sunlight. Avoid areas near trees or various other structures where snow or leaves can pile on your cold frame. This may result in damage to your structure or sunlight blockage.
Allow ventilation upon hotter days. Too much warmth isn’t always a very important 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 frame during unseasonable high temperature waves. Of these occasions, open your structure and invite sufficient airflow to provide plants preferred warmth without suffocating them.
Use your cold frame for growing inside your means. As mentioned previously, chilly frames are excellent for extending the developing season of cool-season vegetables in the springtime and wintertime. When hardening off tender plants and seedlings, chilly frames also enable a less strenuous transition for plant life from inside to outside. Stick 
to options that survive within your location’s current weather range, not completely out-of-season plant types. The internal temperatures are only somewhat warmer and more managed than the outdoors. So, plant life should deal with the highs and the lows of your area fairly well while protected in your cold frame.
The rack and pinion drive system is for the mult-span agriculture venlo greenhouse ventilation system, it can be utilized 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 cool frames provide a slightly warmer and more controlled environment than external temps, these devices help gardeners start vegetation without worry of frost or frozen ground. Plants won’t be suffering from unseasonably cold or hot weather we often encounter during spring and fall. Chilly 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, these structures can protect them during dormancy. When overwintering plant life, minimize sunlight and keep maintaining adequate soil dampness. This ensures vegetation won’t attempt to grow but don’t completely dry either.
Harden off delicate plants and seedlings. Cold frame greenhouses help plants make the transition from indoor vegetation to outdoor plants. Whether you began seedlings in your home or a greenhouse, plants must gradually adjust to the modify in temperature, sunlight, moisture, and exposure outdoors. With a cold framework, plants are controllably subjected to these changes, while still staying sufficiently protected. Once plants modify to the climate change in your cold body, after that transplant them to your garden.
Cold body greenhouses are relatively simple to use for just about any or all of the reasons listed above. However, keep these few tips in mind in order to maximize the benefits of your structure.