Dust Free™ 19837 System Service Transition, Side Access, C Furnace to D Coil, 21.25" to 24.75" Widths, R4.3, All sizes ship in knock-down format, 4" x 26" x 10"
SST2 Side Access Series. Extra-large access door for easy inspections of critical system components.
Compact "knock-down" format is easy to carry and assemble on site.
The SST2 System Service Transition solution allows for quick and efficient HVAC system service, while providing optimal SEER performance with 100% airflow. The removable, insulated, access door, gives the servicing contractor the space they need to properly inspect, clean, diagnose and maintain the evaporator coil and the furnace heat exchanger.
Optimized SEER Performance Plus Easy Service Solution
The industry's only compact, knockdown, system transition with a true access door, large enough to allow for proper inspections and maintenance.
No More Small "Inspection" Doors.
Extra-large door allows true access for inspections, cleaning, leak detection, and system checks.
Save Time And Labor.
Save time dismantling or cutting into a system for service. Save time reassembling and resealing the system afterward.
Fully Insulated.
Fully lined with foilbacked, UV-safe, R4.3 insulation that meets application standards and code compliance for HVAC accessories.
Easy To Carry.
“Knock-down” format makes the SST2 easy to carry into tight spaces and field assemble in minutes.
IAQ Ready.
Pre-fabricated for a variety of Dust Free® indoor air quality product installations.
Fits Multiple Applications.
Available in Side Access Series and Closet Series for upflow, horizontal, attic, closet, and basement applications.
Optimized SEER Performance
The SST2 improves air flow distribution without block-offs or restrictions. Compatible with 2023 SEER2 standards
