NET
11 He saw heaven opened and an object something like a large sheet descending, being let down to earth by its four corners.
Darby
11 and he beholds the heaven opened, and a certain vessel descending, as a great sheet, [bound] by [the] four corners [and] let down to the earth;
KJV
11 And saw heaven opened, and a certain vessel descending unto him, as it had been a great sheet knit at the four corners, and let down to the earth: