This document provides specifications for 18mm, 25mm, and 31mm day and night roller shades and RV roller shades from Ningbo Wohome Furishing Co.,Ltd. The shades come with spring clips, adjustable brackets, springs, rotary dampers, and auto stop. They are designed for small windows and come in various width and height sizes. The 18mm, 25mm, and 31mm tube widths can be used to manufacture roller blinds and come with fabrics to match blackout needs. The control performance is designed to be quiet and long-lasting.