卷帘门采购非常容易踩的坑：帘片选厚了、导轨选细了、电机按非常轻配。三件套各买各的，装完一刮风晃、频繁用烧电机。

The easiest pitfalls in purchasing rolling shutter doors are choosing thicker curtains, thinner guide rails, and lightest motors. Buy each of the three sets, and after installation, use the motor frequently due to wind shaking and burning.

电机和门片匹配：铝合金帘片每平米4–6kg，彩钢6–8kg，加卷轴底梁算总重。电机标称提升力留1.5倍余量。日均启闭50次以上选S4工作制，别拿S2短时硬顶。管状电机藏轴内散热差，外挂电机噪音大，按空间选。

Motor and door panel matching: Aluminum alloy curtain panel weighs 4-6kg per square meter, color steel weighs 6-8kg, and the total weight is calculated by adding a roller bottom beam. Leave a margin of 1.5 times the nominal lifting force of the motor. Choose the S4 working system when opening and closing more than 50 times a day, and do not use the S2 short-term hardtop. Poor heat dissipation inside the hidden shaft of the tubular motor and high noise from the external motor, choose according to space.

导轨是隐形骨架：普通商铺80×80mm够用，抗风门100×100mm以上、壁厚≥2mm。锚栓间距≤600mm，顶端底端双锚。垂直度≤2mm/m，两轨平行度≤3mm，超差门片蹭轨。

The guide rail is an invisible skeleton: 80 × 80mm is sufficient for ordinary shops, with anti wind doors of 100 × 100mm or more and a wall thickness of ≥ 2mm. The distance between anchor bolts is ≤ 600mm, with double anchors at the top and bottom. Verticality ≤ 2mm/m, parallelism between two rails ≤ 3mm, and out of tolerance door plate rubbing against the rail.

控制箱配过载、缺相、双限位。遥控选433MHz滚动码，防火门加烟温联动接口。

The control box is equipped with overload, phase loss, and dual limit. Remote control with 433MHz rolling code, fire door with smoke and temperature linkage interface.

验收三件事：空载升降10次限位不漂、手动拉链力度≤150N、红外下行遇阻反弹。

Three things for acceptance: no floating limit after 10 times of no-load lifting, manual zipper force ≤ 150N, and rebound when encountering resistance during infrared downward movement.

合同写死电机品牌型号工作制、导轨规格壁厚、质保含不含控制板。只报"整套价"的，换电机单算钱。

The contract specifies the motor brand, model, working system, guide rail specifications, wall thickness, and warranty including or excluding the control board. For those who only quote the "whole set price", the cost will be calculated based on the motor replacement order.