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 cool frame. In order to increase warmth and sunlight as well as your cold frame, pick an optimal location to put your structure. Choose a south-facing spot that offers lots of sunlight. Avoid areas near trees or other structures where snow or leaves can pile on your cold frame. This may result in damage to your structure or sunshine blockage.
Allow ventilation upon hotter days. Too much warmth is not always a good thing – and that’s the benefit of a cold frame greenhouse. Since outdoor sunshine and temperature impact a cold frame’s internal temperature, easily change your cold framework during unseasonable temperature waves. Of these occasions, open your structure and invite sufficient airflow to provide plants preferred warmth without suffocating them.
Use your cold body for growing within your means. As stated previously, frosty frames are excellent for extending the developing season of cool-season vegetables in the spring and wintertime. When hardening off tender plant life and seedlings, chilly frames also enable a less strenuous transition for plants from inside to outside. Stick to options that survive inside your location’s current environment range, not totally out-of-season plant types. The internal temperatures are only slightly warmer and more controlled than the outdoors. So, plants should handle the highs and the lows of your area fairly well while shielded in your cool 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 reliable. and will be control automaticly.

Extend the growing season for cool-season crops. Because chilly frames provide a slightly warmer and more managed environment than external temps, these devices help gardeners start plant life without worry of frost or frozen floor. Plants won’t be suffering from unseasonably cold or warm weather we often encounter during spring and fall. Cool frames work great for cool-season plants as they can withstand the low evening temperatures.
Overwinter dormant plant life. While a cold frame greenhouse won’t enable tender plants to continue growing through wintertime, these structures can protect them during dormancy. When overwintering plants, minimize sunlight and maintain adequate soil dampness. This ensures vegetation won’t attempt to develop but don’t completely dry either.
Harden off delicate plant life and seedlings. Cold framework greenhouses help plants make the changeover from indoor plant life to outdoor plants. Whether you began seedlings in your home or a greenhouse, vegetation must gradually adapt to the alter in temperature, sunlight, dampness, and exposure outdoors. With a cold framework, plants are controllably gear rack for Greenhouse subjected to these changes, while still staying sufficiently shielded. Once plants adapt to the climate change in your cold framework, then transplant them to your backyard.
Cold body greenhouses are not at all hard to use for just about any or all the reasons in the above list. However, keep these couple of tips in mind to be able to maximize the benefits of your structure.