Hoffman CWF5557, CONCEPT¢ ;Fixed Window Kit, Fits 550x570mm, ANSI 61Hoffman CWF5557 CONCEPT¢ ;Fixed Window Kit, Fits 550x570mm. Product Specifications BRANDHoffman® COLOR FINISHANSI 61 MANUFACTURERS PART NUMBERCWF5557 CONSTRUCTIONAluminum WINDOW SIZE M X N MM493 x 486 WINDOW SIZE M X N (INCHES)19.40 x 19.13 WINDOW SIZE M X N INCHES19.40 x 19.13 WINDOW SIZE M X N (MM)493 x 486 FITS550x570mm DESCRIPTIONFixed & Hinged Window Kits COLORPaint A X B X C MM550 x 570 x 36 A X B X C INCHES21.65 x 22.44 x 1.42