Zero 545D 48IN Threshold 1/4in H x 5in W 48in Dark Bronze

Zero International Inc 545D 48IN Threshold is engineered to meet the rigorous demands of high-traffic openings while providing exceptional performance in energy efficiency and environmental control. With a height of 1/4 inch and a width of 5 inches, this dark bronze threshold is designed to create a barrier against smoke, sound, and light, ensuring a secure and comfortable indoor environment. Constructed from heavy-gauge materials, the 545D threshold allows for direct installation into concrete without the risk of buckling or loose screws often associated with lighter materials. This durability makes it suitable for commercial and institutional settings, whether for interior or perimeter applications. The threshold is compatible with various door types, including fire-rated doors and ADA openings. Unique features include energy-efficient thermal-break technology that minimizes outside temperature transfer, and an extruded bulb finger double sealing system that guarantees an airtight seal, even with misaligned or slightly warped doors. It also offers adjustable-width options for easy installation without exposed screws, enhancing both aesthetics and durability. Certified for fire rating, smoke and draft control, air infiltration, sound, and ADA accessibility, the Zero International Inc 545D 48IN Threshold is a versatile solution for enhancing door performance while meeting industry standards.

Threshold 1/4in H x 5in W 48in Dark Bronze

From increasing energy efficiency to creating a barrier for smoke, sound and light – thresholds serve many important purposes. That’s why it is important to standardize on top quality materials and construction. Zero thresholds are designed to stand up to the demands of heavy traffic openings and those with extreme temperature differentials. The heavy-gauge material allows you to drill and screw our thresholds directly into concrete without the difficulties common when using lighter commercial materials, such as buckling under heavy loads or loose screws. Commercial and institutional facilities can benefit from using Zero for both interior and perimeter applications. Solutions are available for a variety of applications, including:

• Fire rated doors
• ADA openings
• Sound rate assemblies

Features:

• A variety of types of thresholds are available to accommodate the specific needs of your application. With unique features such as:
• Energy-efficient thermal-break thresholds – specially designed to prevent the transfer of outside temperature and frost to the interior side of the door.
• Adjustable-width systems – features threshold rests that interlock with various size plates. Much easier to trim and fit than conventional, single-size cast-bronze thresholds. Install without exposed screws on the base for better aesthetics and durability.
• Extruded bulb finger (EBF) double sealing system – designed to ensure an airtight seal even when doors are misaligned because of poor installation or slightly warped. If the door fails to make contact with the bulb in this neoprene gasket, the extra "finger" acts as a supplemental seal to block air flow

Specifications:

• Zero thresholds meet the highest standards in the industry for reliability and performance. They include certifications for:
• Fire rating
• Smoke and draft control
• Air infiltration
• Sound
• ADA accessibility

Types:

• Saddle thresholds are the most commonly used because they are beveled equally on both sides and come in varying widths and heights
• Half-saddle thresholds are raised on one side to ease transition at the sill
• Offset thresholds are non-symmetrical to address areas where uneven surfaces meet
• Rabbeted thresholds incorporate a ridged design to seal against the door to provide superior insulation
• Thermal break thresholds are specially designed to prevent the transfer of outside temperature and frost to the interior side of the door
• Carpet divider thresholds designed to be used as a divider between two floor finishes
• Adjustable thresholds Interlocking plates and noses provide flexibility and can be customized to meet the unique requirements of your opening
• Traction tread adjustable thresholds used to enhance safety with formulated rubber inserts or with an epoxy abrasive (non-slip particles) bonded into the grooves
• Ramps provide a gradual incline to ease the transition between ground and sill for accessibility
• Interlocking thresholds allow you to interlock with an angle or hook to prevent water infiltration
• Adjustable interlocking thresholds allow you to mix and match components to customize a solution
• Specialized threshold solutions offer a variety of solution sets are available for various applications from bulkhead systems, roof curb thresholder, wheel chair accessible showers and more.

Materials Available:

• S: Silicone rubber can handle many applications including those with temperature extremes
• N: Neoprene rubber a versatile material for heavy duty applications
• FS: Intumescent for fire and smoke protection
• BIO: BioWall rubber with anti-microbial inhibitor for infection control
• R: EPDM rubber excellent for outdoor use

Finishes:

• A - Aluminum mill finish
• BK - Aluminum black anodized
• D - Aluminum dark bronze anodized
• G - Aluminum gold anodized