The L170 is available in two versions. We offer a commercial version and a version with a unique bracket, specially designed for mounting with leisure Lifebuoys. Both versions are fully SOLAS approved and differ only in the bracket supplied. Both brackets are designed for easy fitment. * Remember to order your L170 Commercial mounting plate to ensure easy fixing when replacing your L16x Lifebuoy Light, if that light had been fitted with the L16x Adapter Plate. Note the L170 Adapter Plate is only for use with the L170 Commercial Lifebuoy Light.