| 摘要 |
<p>A blind for a building opening, and having a head rail, attachable adjacent the building opening, the head rail defining upper and lower regions, and having; an upper blind roller, located in an upper region of the head rail, a lower blind attachment located in a lower region of the head rail, an upper blind stored on the upper blind roller, a lower blind stored on the lower blind attachment, upper roller control mechanism operable to lower and raise the upper blind , lower blind control mechanism operable to operate the lower blind and to lower and raise said lower blind, wherein the upper blind roller is located with an upper axis along an upper plane in the head rail and the lower blind attachment is located on a lower axis along a lower plane within the head rail, the axes being displaced vertically from one another , and wherein the upper blind is operable to depend down beside a predetermined side of the lower blind attachment, and wherein the lower blind is operable to depend down alongside said upper blind , so as to to provide a head rail having a slim , aesthetically pleasing profile. 26</p> |
