b'R-SERIES OVERVIEWThere are three methods of measuring a shade via weight- IB, OB and FM. IB measures the space in between the window frame. OB measures the outer side of the frame. FM is an alternate method using fabric measurement for an unknown frame measurement.Our R Series brings customers the traditional dependability and durability ofproductsand elegance of valances based on time-tested methods and a reputation of close to 40 years.10 ELITE DECOR 2022 PRICE LIST R-SERIES OVERVIEW'