Brass Mortise Entry Handle Left Hand Lock Set with 2.5 in. Backset and 2 SC1 Keys

Hi Robert, This lock set does not carry specific approval from the Santa Clara Fire Department. Generally, door hardware is not approved by individual fire departments. Instead, compliance is determined by national standards (such as ANSI/BHMA grades or UL listings). If you are working on a project that requires specific fire code compliance (such as for a commercial building or multi-family unit), we recommend contacting your local building department or fire marshal. They are the 'Authority Having Jurisdiction' and can confirm if this specific mortise lock meets the requirements for your local building codes."

Hi, Eduar, that lockset works for outdoor use. It's rated for exterior entry doors and has a solid brass cylinder for weather resistance.

Sorry to hear the key isn’t opening your Premier Lock Brass Mortise Entry Handle (ML03) when the toggle is flipped! This might not be a defect—it’s likely how the lock is designed. When you flip the toggle to lock, it disables the outside handle, so the key only unlocks the deadbolt, not the latch. Here’s a quick fix guide: Steps to Try Use the Key Correctly: Insert the key outside and turn it fully (may need an extra 1/4-1/2 turn to retract the latch after unlocking the deadbolt). Reset Toggle: Inside, unlock the deadbolt with the thumbturn, then flip the toggle to “unlock” (usually up). Try the key again. Check for Sticking: If the key won’t turn, spray graphite lubricant into the keyhole and wiggle gently. Ensure the door aligns with the strike plate. Inspect Lock: Remove the inside knob (check for a small screw) to see if the toggle or cylinder is stuck. Tighten any loose screws. Tips, This is normal for mortise locks like this one. The toggle locks out the handle for security. If the key still won’t work, it might be a rare defect. Contact Home Depot for a return (90-day policy)

The Premier Lock Brass Mortise Entry Handle Left Hand Lock Set (Model #ML03) includes two SC1 keys that are pre-cut to match the lock's cylinder. This means the keys are ready for immediate use without requiring additional cutting or locksmith services. Installation of the mortise lock can be easy or challenging depending on your familiarity with such tasks and the condition of your door. If your door already has the correct-sized hole to fit the mortise body, you likely won't need a locksmith and should be able to install it yourself. However, if your door needs modification or you are unsure about the alignment and fit, professional assistance may be required to ensure proper installation.

The Premier Lock Satin Chrome Mortise Entry Handle Left-Hand Lock Set (ML03D) is not designed for sliding doors. This mortise lock is intended for hinged doors and requires a specific door thickness and preparation to accommodate the lock body and handle mechanism. For sliding doors, a dedicated sliding door lock or latch is usually required, as these are specially designed to work with the sliding motion and door frame style.

If you are referring to the removal of the mortise cylinder, here are the steps to follow: Unscrew the faceplate on the edge of the door. Locate and unscrew the two cylinder set screws that secure the mortise cylinder in place. Once the set screws are removed, you should be able to rotate the cylinder out of the lock body. I hope this answer your question, if not feel free to contact us for further assistance.

Thank you for reaching out with your inquiry. After reviewing your request regarding the compatibility of our MR03D with the Mortise 5FW/32D-B4S6 right-hand lock set, I wanted to inform you that there is a key difference in the backset measurements between the two products that may affect compatibility. The backset is the distance between the edge of the door and the center of the lock mechanism hole. - The MR03D has a backset of 2-1/2". - The Mortise 5FW/32D-B4S6 has a backset of 2-3/4". Due to this difference, the MR03D may not be compatible with your door. Please let me know if you have any further questions. Best regards,

Thank you for reaching out regarding the issue with your Satin Chrome Mortise Entry Handle. If the toggle switch is not functioning as expected, it may indeed be a defect. I recommend bringing the product back to the retailer where it was purchased for a replacement or further assistance. Please let me know if you have any other questions or need further support. I’ll be happy to help. Best regards,