Patented design allows for adjustment from 0 to 1-3/4 in after installation|Ideal for new work or retrofit (old work) applications|Backless Low-Voltage bracket and floor box designs available|Ideal for various drywall thicknesses and wall finishes|PVC construction for easier installation, greater performance and lower installation cost|Designed and listed for use with non-metallic sheathed cable in accordance with article 314 of the national electrical code|All PVC boxes are permissible for use with 90 deg c connectors|Mounting means up to 1-3/4 in adjustable bracket