SERIAL.................. 34228MODEL................... PHC20VARTONNAGE................. 20STROKE.................. 18"THROAT.................. 4"/12" FROM CENTER OF RAMDAYLIGHT................ 21" TO RISER/34" TO BEDBED SIZE................ 28" WIDE X 16" DEEPRISER DIMENSIONS........ 13" TALL X 26" WIDE X 17-1/2" DEEP