Replacement middle (center) grille for Bose 301 Series II speakers. Sold individually: order 2 for a pair. The part is symmetric, so the same grille fits both the left and the right cabinet. The plastic center grilles on these speakers get brittle with age and crack or lose their pegs. This one snaps into the same mounting holes as the original: two split snap pegs on the back, 196.5 mm (7.74 in) apart centre to centre. - Size: 57.0 x 231.5 mm (2.24 x 9.11 in), 10 mm face thickness, pegs about 12 mm (0.47 in) diameter - Our own front design: two columns of rounded slots with a center bar and flat end panels. It does not copy the original Bose grille pattern and has no logo or lettering - Material: PETG, black, 3D printed (FDM). Layer lines are visible up close - Fitting: line the pegs up with the holes in the cabinet and press the grille in evenly at both ends Before you buy, please check your speaker's model and measure the opening for the center grille. Made for the 301 Series II; fit on other 301 series (I, III, IV, V) has not been confirmed. Images are computer renderings (CG), not photos. Aftermarket part, not made by or affiliated with Bose.