International Door Closers IDCDL4510 Lever Handle for DL4510

No. The handing is field reversible thanks to a reversible cam plug, so one part covers either swing and you can flip it on site. If you want it set at the factory instead, state the hand when you order.

Yes, those are alternate codes for this lever. 140988, HL-4560DU and HL4560DU all cross to the IDCDL4510, with the DU suffix indicating the storefront bronze finish.

The Imperial USA TH1100 Series lever handle is offered as a dedicated left hand lever, so the handing is set by the part you order rather than set in the field. The International Door Closers IDCDL4510 takes the other approach: it ships with a field-reversible cam plug, so one part covers either hand at the door, and handing only needs to be specified when you want it pre-handed at the factory. If your crew prefers to pull a lever out of the box already handed, the TH1100 left hand lever matches that workflow; if you are stocking one part number for mixed openings, the IDCDL4510 covers both hands.

Treat it as a different platform, not a drop-in. The International Door Closers IDCDL4510 lever handle is built specifically for DL-4510 series latch locks, so its cam plug engages that lock body. The Imperial USA lever is part of the TH1100 Series and is sold against that series. If the lock in the door is a DL-4510, order the IDCDL4510; use the TH1100 lever where the TH1100 series hardware is already in place.

No. The IDCDL4510 is cut for the DL-4510 latch lock and its cam plug engages that specific mechanism. For Imperial USA hardware, the matching trim is the Imperial USA TH1100 Series lever handle, which is ordered by hand rather than field reversible.

Two finishes are orderable: AL, a baked satin aluminum paint, and DU, baked storefront bronze paint. Both are painted rather than plated, which is standard on aluminum storefront hardware and lets the lever match anodized aluminum and dark bronze door frames.

Just the lever handle, with its field-reversible cam plug. It is the trim that drives the DL-4510 latch lock. If the latch mechanism itself is worn out, replacing this lever alone will not fix it.

The International Door Closers IDCDL4510 is offered in DU Storefront Bronze as well as AL Aluminum, so you can match existing storefront finishes directly from the lever you are ordering for DL-4510 latch locks. The Imperial USA TH1100 Series lever is identified by series and handing rather than by a storefront bronze finish option, so for a bronze-matched fleet the IDCDL4510 is the one that carries the finish code you need.