chairpartsonline Replacement Armrest Arm Pad - Fits Herman Miller Equa Chair - Non-OEM (Set of 2) S4109-1 3.5" Wide x 9" Long x 1.5" Tall Mounting screw holes are 4" (100mm) apart & are 1/4-20 threaded (hardware not included) Fit Herman Miller Equa chairs - Versions I & II with original fixed arms Universal - Left or Right side (both are the same - Sold as a PAIR - Set of 2 Made of black soft touch polyurethane