Pemko #434 Automatic Door Bottom, Mortised, Heavy Duty, with Choice of Seals - .75" Drop
Pemko #434 heavy duty automatic door bottoms require low closing force to actuate a drop down bar which lowers when the door is closed to prevent air, light, sound, fire, smoke, dust and moisture from coming through the gap under doors. Available with a PemkoPrene™ or EPDM seal and is custom cut to size.
PRICED PER ITEM
How to Order: Selecting Seal Material and Size required will determine your total price. To determine size needed, see How to Measure for an Automatic Door Bottom. Door bottom can be trimmed up to 2" in the field.
These heavy duty automatic door bottoms create a strong seal, preventing fire, smoke, sound, drafts, dust, light and moisture from penetrating the gap under doors.
How it Works: The high quality automatic mechanism consists of an aluminum case which surrounds a moveable drop-bar seal. The drop-bar seal is actuated by a plunger which contacts the door frame jamb as the door is closing, forcing the drop-bar seal down against the floor / threshold. The plunger requires low "Feather Touch" closing force to actuate the drop-bar seal. The seal drops to fill gaps up to 3/4". The mechanism causes the seal to always actuate on the hinge side first, which prevents the seal from skidding along the floor/threshold while the door is being closed (See Application Tab). Door hang-up will not occur!
EPDM vs. PemkoPrene™: When choosing a seal it is essential to determine the purpose for sealing and the floor surface beneath the seal.
- EPDM is comparable to Sponge Neoprene, though it is more Eco-Friendly and delivers an overall better performance. Specifically, it has great sound control properties and is resistant to solvents.
- PemkoPrene™ has a multi-point compression design which works great on uneven surfaces such as a tiled floor or carpet. PemkoPrene™ is not a firm seal which allows for more leniencies. Both options remain effective in a wide range of temperatures and can be used on external doors.
Installation: This automatic door bottom is fully mortised, and will not be seen on the face of the door, making it ideal for high end, luxurious doors. It is non-handed (reversible) and can be applied to both wood or metal doors. Size of casing differs depending on the length, please review product specs.
Installation instructions, end plates and installation screws provided. Screws are colored to coordinate with casing.
Seal Replacement: Seals are manufactured to last through many usages, however if required, a replacement seal can be purchased, which eliminates the need to replace the whole door bottom. See our Pemko Automatic Door Bottom Replacement Seal.
Please note, images are for illustrative purposes only. They are not actual photos. Therefore, actual colors may vary slightly and size may be enlarged to show detail. See product specs for exact measurements.
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QuickShipNo
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ManufacturerPemko Manufacturing
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MPN434RL, 434PKL, OS434PKL, OS434RL
- Product Design
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Seal TypePemkoPrene® Rubber Seal, EPDM Rubber Seal
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Mounting TypeFully Mortised
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Door TypeWooden Door
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- Dimensions
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Casing DimensionsRefer to Product Specs
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LengthCustom Cut to Size
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Drop SizeUp to .75" Drop
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Door Thickness1-3/4" Thick
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- Installation
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HandingNon-Handed
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Installation ScrewsInstallation Screws Provided
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SizingTo determine sizing required see 'How to Size an Automatic Door Bottom'
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- Special Features
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Compatible Insert Replacement#PK4304 PemkoPrene Replacement
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- Finishes
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FinishMill Finish Aluminum (US27)
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- Compliance Details
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Compliance DetailsAir Infiltration Rated, Sound Rated, ADA Compliant, BHMA Certified, Smoke Rated, Fire Rated, UL Classified, GreenGuard Gold Certified
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ANSI DesignationR3G324, R3G325
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Warranty5 Year Limited Warranty
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