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    Passage Door Hardware
    1. Home
    2. Builders Hardware
    3. Passage Door Hardware
    Item # SLMFU1200-70-L • Mfr # MFU1200-70-L

    Mono Flat Unison, Flush Sliding Door System Set - Heavy Duty Left

    • Catalog page, MFU1200-70-L
      Catalog page, MFU1200-70-L

    Description

    Mono Flat Unison Flush Sliding Door System Use

    Mono Flat Unison flush sliding door system set is a heavy duty left-hand flush sliding door system designed to give passage doors a clean, wall-flush finish while still allowing the panel to slide completely open. Sugatsune America builds this Mono Flat Series flush door hardware set so the door is designed to close flush against surrounding walls, which creates a smooth transition between wall and door in finished spaces. The system uses a unique movement that recesses in, and then slides sideways, so the door can first move into a pocket position and then travel along the wall line. No floor tracks are required on the MFU-System, so the walking surface stays unobstructed and uninterrupted. The hardware is designed for use with 1-3/16 inch to 1-9/16 inch (30-40mm) thick doors, matching common interior passage door builds for joiners and installers.

    Key Mono Flat Features For Clean Door Runs

    • Sugatsune's Mono Flat Series flush door hardware set is designed to close flush against surrounding walls, providing a clean appearance that suits modern, minimalist passage door layouts where visual continuity between wall and door matters.
    • The unique movement recesses in, and then slides sideways, so the door can clear the wall and then travel, supporting installations where the panel needs to disappear toward an adjacent wall line after opening.
    • The MFU-System requires no floor tracks, which keeps the floor uninterrupted, useful where continuous flooring or easy rolling access under the door opening is part of the project requirements.
    • The system has high durability and passed a 100,000 open/close cycle test (private), supporting applications where the door will see frequent daily operation over a long period.
    • A two way damper is built in to avoid slamming open or closed, helping the door decelerate at both ends of travel and reducing impact on the door, frame, and surrounding finishes.
    • No handle is needed on the door front for opening, which lets the door face stay flat and uncluttered, tying into flush wall concepts and making finishing details simpler.

    Flush Sliding Door System Mounting And Fit

    This Mono Flat Unison heavy duty left configuration is designed so the door is designed to close flush against surrounding walls, which affects how the jambs, stops, and wall finishes are planned around the opening. The unique movement that recesses in, and then slides sideways allows the panel to first move clear of the wall plane, then track sideways into the space behind the adjacent wall required for the door to slide into. Because no floor tracks are required on the MFU-System, all guiding and support are handled away from the finished floor area, which influences how headers and structural support are framed. The system is designed for use with 1-3/16 inch to 1-9/16 inch (30-40mm) thick doors, so door blanks or built-ups need to fall within that thickness band for proper hardware engagement.

    Using Mono Flat Unison In Real Projects

    Where This Flush Sliding Door System Performs

    Sugatsune's Mono Flat Series flush door hardware set is positioned for builders working with passage door hardware where the door is designed to close flush against surrounding walls and still slide fully open. The unique movement that recesses in, and then slides sideways means the door can disappear along the wall, supporting layouts where a swinging door would interfere with circulation or furniture. Space behind the adjacent wall required for the door to slide into defines where this system fits best: wall segments that can host the sliding path while keeping the door in a recess position when open. Because no floor tracks are required on the MFU-System, this approach works well wherever a continuous floor surface is important, such as long corridor runs or rooms where floor-level interruptions would conflict with the design intent.

    Details That Support Consistent Sliding Performance

    The built-in two way damper to avoid slamming open or closed directly affects daily operation, because the door decelerates at both the opening and closing ends of travel, limiting shock to the structure and helping finishes stay intact. High durability proven by a 100,000 open/close cycle test (private) gives installers confidence using this Mono Flat Unison heavy duty left system in projects expecting frequent use over years of service. The fact that no handle is needed on the door front for opening lets fabricators deliver a completely flat door face, simplifying routing and hardware prep on the stile while aligning with flush wall schemes. The system's design for use with 1-3/16 inch to 1-9/16 inch (30-40mm) thick doors provides a clear target for door construction so the hardware geometry lines up consistently. Space behind the adjacent wall required for the door to slide into guides framing and layout decisions so the recess and slide function happen without conflict.

    Common Questions About Mono Flat Unison Use

    What type of door movement does this Mono Flat Unison system use?

    The Mono Flat Unison system uses a unique movement that recesses in, and then slides sideways, so the door first moves into a recessed position and then travels along the wall line.

    How does the flush closing against surrounding walls affect design?

    The door is designed to close flush against surrounding walls, so wall and trim details can align in a single plane, supporting clean, continuous surfaces in passage openings.

    What door thickness range works with this sliding door system?

    The system is designed for use with 1-3/16 inch to 1-9/16 inch (30-40mm) thick doors, guiding selection or construction of panels that match the hardware geometry.

    How does the two way damper help daily door operation?

    The two way damper to avoid slamming open or closed slows the door near each end of travel, reducing impact forces and helping protect door edges and surrounding finishes.

    Why is the absence of floor tracks important on the MFU-System?

    The MFU-System uses no floor tracks, so the floor surface stays continuous, supporting uninterrupted flooring runs and clear passage where thresholds or tracks are undesirable.

    How does operating without a front handle affect the door face?

    No handle is needed on the door front for opening, allowing a completely flat door face that aligns with flush wall concepts and simplifies finishing and visual detailing.

    Select This Flush Sliding Door System For Your Build

    The Mono Flat Unison flush sliding door system set as a heavy duty left configuration from Sugatsune America offers a door that is designed to close flush against surrounding walls while using a unique movement that recesses in, and then slides sideways. With no floor tracks required on the MFU-System, a two way damper to avoid slamming open or closed, and design for use with 1-3/16 inch to 1-9/16 inch (30-40mm) thick doors, it aligns well with passage door hardware needs in modern wall-flush layouts. Use this MFU1200-70-L configuration wherever space behind the adjacent wall required for the door to slide into can be integrated into the framing plan.

    Minimum Door Weight
    88 lb
    Maximum Door Weight
    154 lb
    Door Swing
    Left to right
    Product Type
    Mono Flat Unision Flush Sliding Door System
    Supplier Pack Size
    1
    Sold In
    1
    Minimum Door Weight
    88 lb
    Maximum Door Weight
    154 lb
    Door Swing
    Left to right
    Product Type
    Mono Flat Unision Flush Sliding Door System
    Supplier Pack Size
    1
    Sold In
    1
    Sugatsune America
    44 lb88 lb
    88 lb154 lb
    Left to rightRight to left
    $1,393.15/Set
    Mono Flat Unison, Flush Sliding Door System Set - Heavy Duty Left
    Item# SLMFU1200-70-L / MFR Part # MFU1200-70-L
    Set
    Set

    Drop Ship Item

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    Sold In: 1 Set

    Set