Quietflex dl101548100 Duct Liner 1x48x100 R-3.3

Product Description

The QUIETFLEX dl101548100 is a fiberglass duct liner insulation blanket designed for use inside sheet metal ductwork in forced-air HVAC systems. It carries an R-3.3 thermal rating at 1 inch thickness and measures 47.5 inches wide across a 100-foot roll, yielding approximately 395.8 square feet of coverage per roll. The liner is made from textile-type glass fibers bonded with a thermosetting resin and features a black mat facing that is edge coated during manufacturing. HVAC installers and sheet metal contractors use this product to reduce heat loss through duct walls and to absorb airborne noise generated by the air handler and ductwork system.

This duct liner is suited for residential and light commercial forced-air heating and cooling applications. It is installed on the interior surfaces of rectangular or round sheet metal supply and return air ducts. The product is appropriate for new construction ductwork fabrication as well as retrofit liner installations where thermal performance or acoustic attenuation is needed. The roll format simplifies field cutting and fitting to custom duct dimensions.

Key Features

• R-3.3 thermal resistance rating at 1 inch thickness helps limit heat transfer through duct walls
• Black mat facing is applied and edge coated during manufacturing for a durable, long-lasting bond to the base blanket
• Textile-type glass fiber construction bonded with thermosetting resin for dimensional stability
• Absorbs airborne noise generated by air handlers and duct systems to reduce sound transmission
• Will not support the growth of mold, fungi, or bacteria
• 395.8 square feet of coverage per roll minimizes splice points on large duct runs

Compatibility

Designed as an OEM-style interior liner for rectangular and round sheet metal ductwork in residential and light commercial forced-air HVAC systems.

Installation Notes

Installation is typically performed by licensed HVAC technicians or sheet metal contractors in accordance with SMACNA duct construction standards and local mechanical codes. Power down the air handling unit before working inside or on connected ductwork. Cut the liner to fit using a utility knife and straightedge, and secure it to duct interior surfaces using approved adhesive and mechanical fasteners per the liner manufacturer and SMACNA guidelines. Avoid compressing the liner, as compression reduces effective R-value.