SelectRic 5MPLUS-346 Polished Chrome Coax/Antenna Cover Plate. Range: 5M-Plus Finish: Polished Chrome Screwless No yoke required Modules screw directly into plate Compliant with BS 5733 Guarantee: 5 years Dimensions (mm): 86 × 86 x 5 Only compatible with SelectRic back fittings ,, Thank you