Astro Mirror Adaptor Kit 2 is a purpose-made mirror adaptor kit from Astro for fitting certain bathroom wall lights directly onto a mirror surface. The kit is engineered to make a discrete, secure fixing where lights need to be mounted through glass.

The kit comprises three primary components: a large circular mounting plate, a thin flat washer and a cylindrical knurled nut. The exploded assembly shows a through-hole mounting system secured along a single central axis; the wide plate profile is designed to distribute pressure evenly against the mirror.

Construction is intentionally minimalist and functional, with a plain mounting plate and an industrial knurled cap to aid grip. The knurling on the nut is designed for manual, tool-free tightening to simplify installation and reduce the risk of over-torque on the glass.

Functionally the adaptor provides a neat, low-profile method to support compatible bathroom wall lights on mirrors while spreading load across the glass. It is intended for use with compatible Astro bathroom fittings — check individual product listings for confirmed compatibility.

The kit includes the mounting plate, flat washer and knurled nut shown in the technical illustration; it does not include luminaires, lamps or wiring accessories. Installation follows a through-hole, axial assembly; please refer to the compatible product guidance and installation instructions supplied with your light. The product is supplied with a three-year warranty.

Lighting Design Online recommends this adaptor where a considered, minimalist fixing is required for mirror-mounted bathroom lights. Our advice focuses on achieving the right outcome — clear installation guidance, professional assurance and project-friendly support ensure the finished scheme is secure, visually calm and long lasting.