Shop TMH Automatic Door Bottom

TMH Automatic Door Bottoms

TMH automatic door bottoms are retractable door seals made by Trademark Hardware to help close the gap beneath a door when the door is closed. The automatic mechanism lowers the seal into position as the door closes and retracts it when the door opens.

This design provides a practical way to seal the bottom of a door without using a fixed sweep that remains in contact with the floor throughout the door's movement. Depending on the specific TMH model, an automatic door bottom can help control sound, air, light, dust, and weather infiltration.

How TMH Automatic Door Bottoms Work

A TMH automatic door bottom uses the movement of the door to operate its sealing mechanism. When the door closes, the mechanism activates and lowers the seal toward the floor or threshold. When the door opens, the seal retracts.

The retractable design allows the door bottom to remain clear of the floor while the door is opening and closing, then create a seal when the door reaches the closed position.

TMH Automatic Door Bottom Seals

TMH automatic door bottom seals are designed for applications where the space underneath a door needs to be closed without using a permanently exposed door sweep. The appropriate seal depends on the specific product and the requirements of the door.

Automatic door bottoms can be used to help reduce gaps that allow:

• Sound to pass beneath the door
• Air to move through the bottom gap
• Light to pass underneath the door
• Dust and other particles to pass through the opening
• Weather and outside air to enter through the bottom gap in appropriate applications

The actual sealing and performance characteristics depend on the specific TMH automatic door bottom, door construction, floor condition, and other components used in the door assembly.

TMH Automatic Door Bottoms for Sound Control

An automatic door bottom can help reduce sound transmission through the gap beneath a door by closing the opening when the door is shut. This can be useful in rooms and buildings where controlling sound movement through the door assembly is important.

For sound-control applications, the automatic door bottom should be considered as one part of the complete door assembly. The door, frame, perimeter seals, threshold, and other gaps can all affect overall acoustic performance.

TMH Automatic Door Bottoms for Weather and Air Sealing

Gaps beneath exterior and interior doors can allow unwanted air movement and, depending on the application, dust and outside elements to pass through. A suitable automatic door bottom can help close this opening when the door is closed.

For exterior applications, select a product based on the door construction, floor or threshold condition, required seal drop, and environmental requirements. Always review the individual product specifications before selecting a seal for a specific weather-exposed application.

Choosing the Right TMH Automatic Door Bottom

Before ordering a TMH automatic door bottom, consider the following:

• Door width: Select a length that matches the door or can be properly fitted according to the product specifications.
• Door construction: Check compatibility with the material and construction of the door.
• Installation method: Determine whether the product is designed for surface mounted, semi-mortised, or mortised installation.
• Bottom gap: Measure the space between the bottom of the door and the sealing surface.
• Seal drop: Make sure the product has enough drop to close the required gap.
• Floor or threshold: Identify the surface that the seal will contact when the door closes.
• Application: Determine whether your main requirement is sound, air, light, weather, dust, or another type of sealing.

Accurate measurements are important because the automatic door bottom must be able to reach the sealing surface while allowing the door to operate correctly.

TMH Automatic Door Bottom Installation

Installation requirements vary by automatic door bottom model. Some products are installed directly onto the door, while others require a recessed or mortised installation. Review the product dimensions and installation instructions before beginning the installation.

For help selecting and measuring an automatic door bottom, see Which ADB is Right for Me and How to Measure for an Automatic Door Bottom.

You can also learn more about the different types and applications in our About Automatic Door Bottoms guide.

TMH Automatic Door Bottoms vs. Standard Door Sweeps

A standard door sweep normally remains in contact with the floor or threshold as the door opens and closes. An automatic door bottom, sometimes called a drop down door seal or automatic door sweep, retracts when the door opens and drops when the door closes.

This makes an automatic door bottom useful when a retractable seal is preferred or when continuous contact between a fixed sweep and the floor is not appropriate for the application.

Shop TMH Automatic Door Bottoms

Browse the available TMH automatic door bottoms above to compare the available products and specifications. Choose the product based on your door dimensions, installation requirements, sealing needs, and the manufacturer's specifications.

Trademark Hardware also offers automatic door bottoms from other manufacturers. If you need a different installation style or brand, you can compare the available automatic door bottoms and find options from manufacturers such as Barzen, Pemko, and Zero.

Frequently Asked Questions About TMH Automatic Door Bottoms

What is a TMH automatic door bottom?

A TMH automatic door bottom is a retractable door seal manufactured by Trademark Hardware. It lowers when the door closes and retracts when the door opens to help seal the gap beneath the door.

What is a TMH automatic door bottom used for?

TMH automatic door bottoms are used to help seal the gap beneath doors. Depending on the product and application, they can help control sound, air, light, dust, and weather-related air infiltration.

Are TMH automatic door bottoms good for soundproofing?

An automatic door bottom can help reduce sound transmission through the gap beneath a door. Overall sound performance depends on the complete door assembly and the specifications of the selected TMH product.

What is the difference between an automatic door bottom and a drop down door seal?

Both terms can refer to a retractable sealing device that lowers when a door closes and retracts when it opens. Product terminology can vary, so always check the specific product specifications when selecting an automatic door seal.

Can TMH automatic door bottoms be used on exterior doors?

Some automatic door bottoms may be suitable for exterior applications depending on their construction and specifications. Check the individual product information to confirm whether a particular model is appropriate for weather-exposed use.

How do I measure for a TMH automatic door bottom?

Measure the door width, the gap beneath the door, and the available installation space. The required measurements vary by product, so review the product specifications before ordering. See our automatic door bottom measuring guide for additional information.

Does a TMH automatic door bottom retract when the door opens?

Yes. An automatic door bottom is designed to retract the seal when the door opens and lower it when the door closes, allowing the seal to engage only when the door is in the closed position.

How do I choose the correct TMH automatic door bottom?

Consider the door width, door construction, bottom gap, installation method, floor or threshold condition, and the type of sealing required. Always compare these requirements with the specifications of the individual TMH product before ordering.