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Install base 2. After construction is complete, install the speaker/transformer unit • Choice of deep base for landscaping or shallow base for surface or shallow bed mounting (both have easy conduit mounting positions with drill points) • Shallow base (ATS138GS/ATS138GS8) has drill points for 4” square, 2-gang EO box, or 1-gang box on its bottom for mounting to a deck or patio • Durable 8” coaxial speakers with a 360-degree horizontal dispersion pattern • ATS183G(L)(S) Has convenient, externally