Arlington LVA1-25 Adjustable Depth Low Voltage Mounting Brackets, Fits up to 1-1/2-Inch Walls, 1-Gang, 25-Pack. This is a 25-pack of 1-gang adjustable depth low voltage mounting brackets, Fits up to 1-1/2-Inch Walls. Perfect for Low Voltage Installations when final wall thickness is unknown - UL and CSA Listed. Depth adjustment screw is always accessible, even after wall finish is in place. Support tabs allow for extra-secure mount to wood or steel studs in new construction. Set to work with a 1/2-Inch thick wall finish and adjusts to accommodate finished walls up to 1-1/2-Inch thick. Non-metallic adjustable mounting brackets are available in double-gang versions (Model LVA2) as needed. The adjustable depth wiring brackets are perfect for installations when final wall thickness is unknown . Made in the USA, UL CSA Listed. In the event any of our products are found to be defective, we will replace them with new product free of charge. The time limit for this warranty is one year following the date of sale or one year after the date of installation, whichever is the earlier date. This warranty does not apply when the product is used for any purpose other than the intended use as described in the Arlington literature. This warranty does not apply when the product is used for any installation which would violate the national electrical code or any code which takes precedence in a particular jurisdiction. Labor is not included.