Designed for 4-inch LED recessed downlights, these new construction mounting plates provide a reliable solution for new build and remodeling projects. Made of premium corrosion-resistant cast iron, they boast outstanding durability and low long-term maintenance costs. Each plate comes with a precision-cut 4.25-inch center opening and built-in alignment notches for accurate positioning and perfect fit with standard recessed fixtures; adjustable slotted tracks work with wood joists, metal studs and various ceiling framing systems, and the slim low-profile design fits easily in shallow ceiling spaces. With all mounting holes pre-punched for effortless installation, they streamline drywall cutting and fixture positioning to save time for contractors, electricians and DIY users, delivering a sturdy and secure base for recessed lighting setups.