Rolling Speed:12cm/s is_customized:Yes Model Number:Aluminum Electric Curtain track Origin:Mainland China Certification:RoHS Please read the following content in detail. 1.This track is suitable for Aqara motor （ZNCLDJ11LM）, Aqara B1 motor . Aqara A1 motor and Tuya motor If you don’t know how to customize the track, please take a picture of your windows and mark the size (accurate to centimeters). We will give our opinion. 2. We will ship as Ceiling Mounted , straight track, Middle Open in default, If the buyer does not leave a message and does not communicate with the seller. 3. Here this link for finished track with all accessories for ceiling mounted, doesnot include a motor 4. Pls install slip parts assemble before operating track. Don't install motor to track untill you can operate track smoothly manuall. Or belt may be destroyed. 5. Subject to logistics rules, we will cut the track to a maximum of one meter and send it in sections. Buyers need to install it by themselves. The default logistics is international express delivery DHL, EMS, Cainiao Heavy Parcel Line. 6. If you need U type or L type curtain track, pls also let us know, we can customize.Currently only 90°and 135° U-shapes are supported. 7. Usually, We will reduce customs declaration fees， track may produce a little customs fee and it is paid by your side . Keep your phone through after you order,very important! 8.If you need Wall Mount, Pls via below link for order it (2pcs wall mount brackets per meter curtain track) https://www.aliexpress.com/item/32959097935.html?spm=a2g0o.store_pc_groupList.8148356.13.16a07ebeus6Bme