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The EMTEK 5110HLOUS4LH.RLS is a left-hand Helios lever passage set finished in satin brass. It is designed for interior passage doors that do not require locking — hallways, closets, and common areas where free passage is the function. The set ships with a 2-3/8 inch backset radius latch and a square rose, sized for doors ranging from 1-1/4 inches to 2 inches thick. A licensed finish carpenter or general contractor typically handles installation, though experienced DIYers working to standard door-prep dimensions can fit this hardware without special tooling. The satin brass finish delivers a warm, brushed tone suited to both traditional and transitional interior schemes.
This passage set is intended for residential interior doors where a turn-button or keyed function is not required. The square rose pairs with the Helios lever to create a clean, geometric profile. The included radius latch plate works with standard door-prep mortises on pre-hung and existing door slabs. Door thickness compatibility runs from 1-1/4 inches to 2 inches, covering the full range of standard interior door stock. The left-hand designation applies to the lever orientation — confirm hand of door before ordering.
Designed as an OEM-style passage set replacement or new installation for standard interior residential doors with a 2-3/8 inch backset prep and door thickness between 1-1/4 inches and 2 inches.
Power down any adjacent low-voltage door sensors or alarm contacts before removing existing hardware. Confirm door hand orientation before installation — reversing a lever set after assembly requires disassembly. Use a standard hole saw kit sized to the existing door bore; do not over-ream the latch bore, as the radius latch plate seats against a prepared mortise edge. Follow local building codes for interior door hardware requirements in commercial applications.
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