He saw heaven open and something like a large sheet being let down to earth by its four corners.
Textus Receptus (TR) - Acts 10:11 >καὶ θεωρεῖ τὸν οὐρανὸν ἀνεῳγμένον, καὶ καταβαῖνον ἐπ᾿ αὐτὸν σκεῦός τι ὡς ὀθόνην μεγάλην, τέσσαρσιν ἀρχαῖς δεδεμένον, καὶ καθιέμενον ἐπὶ τῆς γῆς·