Brand: HTTMT.[ Safety Design] Cordless - safe for homes with children and pets.[ Excellent Material ] The roller blinds Roller shade is 100% polyester fabric +reinforce thermal Insulated Coating. This material balances the temperature, maintains the indoor temperature during the summer, and keeps warm in winter. Waterproof material is good for bedroom, kitchen, bathroom, living room, etc. Durable and long-life time..[ Inside Mounting ] For inside mount, the depth of window should be at least 1.7”, and the blind width should be at least 1/2” narrower than window width(wall to wall).[ Outside Mounting ] Outside mounting is easier in size selecting, you just need to make sure the Light Filtering / Light Through fabric can cover the whole window.