To provide a blind for a horizontal or inclined window which improves a degree of freedom of opening/closing movement of a shielding material.

In a blind for horizontal or inclined window which opens/closes a screen and includes a winding pipe 24, a screen 26 (shielding material) connected to the winding pipe 24, a weight bar 28 connected to the other end of the screen 26, a guide roller projecting from both ends of the weight bar 28, guide rails 12 installed on the right and left sides of the screen 26, and a drive mechanism for opening/closing the shielding material, the guide rail is provided with rail parts 12b and 12c arranged in two upper and lower rows, on which the guide roller can travel, a plurality of communication parts 12d are formed between the rail parts 12b and 12c, and the guide roller (weight bar 28) pushes up a leaf spring 16 (closing member) and can move between the upper and lower rail parts 12b and 12c through the communication parts 12d. The guide roller (weight bar 28) can be locked by one or more stoppers 18 disposed to one rail part 12b.