Making Every Effort To Exceed Your Expectations

Welcome to SLTNS Engineered Systems®, a professional manufacturers’ representative specializing in high-performance building technologies.  We proudly serve the District of Columbia, Maryland, Virginia, Middle & East Tennessee, and South Florida.

District of Columbia

Who We Are...

We specialize in technologies including stairwell pressurization systems, combustion & make-up air systems, clothes dryer exhaust systems, multistory exhaust systems, special gas vents, chimneys, engine exhaust, mechanical draft systems, draft controls, parking garage exhaust systems, and commercial kitchen exhaust.

Providing complete technical assistance and exceptional customer service, we strive to offer unrivaled access to the experience, knowledge, and products of the leading manufacturers in the industry.

Serving the District of Columbia, Maryland, Virginia, Middle & East Tennessee, and South Florida we strive to provide you and your client extraordinary service and unequaled performance on every project.

Engineered Systems & Products

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LF Systems is the industry leader in factory-built active compensated stairwell pressurization controllers, dampers, sensors, and VFDs.

Stairwell

Pressurization

Control

Systems

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LF Systems manufactures fully modulating, demand-based variable volume exhaust systems suitable for multistory kitchen, bathroom, or clothes dryer exhausts. LF Systems also manufacturers exhaust shafts with integrated fire-resistive enclosure assemblies with or without integrated low profile subducts.

Combustion

Make-up Air

Systems

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LF Systems offers a comprehensive package of UL 705 variable speed exhaust fans designed for lint-laden air; fully modulating, demand-based constant pressure controller; single-wall code-compliant exhaust ducts; and lint filters.

Clothes Dryer

Exhaust Systems

LF Systems manufactures fully modulating, demand-based variable volume exhaust systems suitable for multistory kitchen, bathroom, or clothes dryer exhausts. Exhaust shafts with integrated fire resistive enclosure assemblies with or without integrated low profile subducts.
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Multistory Exhaust

Systems

SLTNS Engineered Systems offers the industry-leading UL 1738 single- and double-wall special gas vent with features such as tool-less installation and built-in pitch.
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Special Gas Vents

SLTNS Engineered Systems offers UL 103 and UL 2561 single- and double-wall pressure-rated chimneys for use with non-condensing heating appliances.
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Pressure-Rated Chimneys

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SLTNS Engineered Systems offers factory-built UL 2561 double-wall ceramic fiber insulated exhaust systems for internal combustion engines and turbines.

Engine Exhaust

Systems

US Draft Co. manufactures UL 378 and UL 705 chimney fans, draft inducers, and power venters. Furthermore, US Draft Co. offers high-performance modulating damper systems in addition to single-blade isolation backflow preventers and dampers.
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Mechanical Draft Systems

US Draft Co. manufactures UL 378 and UL 508 fully modulating, demand-based variable volume, constant pressure controllers.
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Draft Controls

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LF Systems is the industry leader in factory-built active compensated elevator pressurization controllers, dampers, sensors, and VFDs.

Elevator Shaft Pressurization

Control Systems

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SLTNS Engineered Systems offers factory-built UL 1978 single- and double-wall grease ducts and UL 2221 “zero clearance” grease ducts with integrated fire resistive enclosure assemblies.

Commercial

Kitchen Exhausts

(Grease Ducts) 

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Need Content

Multistory

Shafts

(w/Integrated Fire-resistive Enclosure Assembly)

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Contact Us

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