FireMaster FastWrap

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Thermal Ceramics FireMaster® FastWrap XL is a flexible blanket composed of high temperature fibers classified for applications to 2192°F (1200°C) and fully encapsulated in a durable glass fiber reinforced foil facing for easy handling and installation. Thermal Ceramics FastWrap XL is UL and ULC Listed for 1 and 2 hour fire resistive enclosure protection, zero clearance for kitchen exhaust ducts, electrical circuit protection, and as a component in UL firestop designs for fire resistance rated floors, ceilings, and walls. The core fibers in FastWrap XL are manufactured using Thermal Ceramics patented Superwool® fiber which is an alkaline-earth silicate wool with low biopersistence and therefore increased safety for installers. FastWrap XL is under UL’s Follow-Up Service Program to ensure the consistent quality essential to this life-safety application.

Product Features
• Thin and Lightweight at 1-1/2” (38mm) thick, 6 pcf (96 kg/m3) density
• Contours easily to complex duct designs
• Grease duct installation UL and ULC Listed with butt joints at all seams on both layers
• Fully foil encapsulated for fast and clean installation
• Contains 2192°F (1200°C) rated fibers
• Microbial Resistance validated by UL Environment
• Good sound absorption
• Compliant to IMC, NFPA 96, UMC, CMC, CNBC

2. Applications
• 2 hour enclosure and firestop system for kitchen exhaust duct
• Zero clearance to combustibles
• 1, 2 and 3 hour enclosure and firestop system for hazardous exhaust ducts, pressurization ducts, clothes dryer exhaust ducts, trash and linen chutes, and other fire rated HVAC ducts
• 1 hour electrical circuit integrity protection
• Engineered and tested solutions for fire protection of structural steel and storage vessels per ASTM E119, ISO 834, and UL1709
3. Specifications – Division 23 07 00 (or 15080)

CSI Spec and AutoCAD available online,

Thermal Ceramics FireMaster FastWrap XL is a flexible high temperature insulation rated to 2192°F (1200°C) that is fully encapsulated in FSP facing. The duct enclosure system shall be listed by UL and /or ULC per ASTM E 2336, CAN/ULC S144 and ISO 6944 for 1-, 2- and 3-hour rating and zero clearance to combustibles, and tested per ASTM E84 for a flame/smoke rating less than 25/50. Insulation shall have a nominal thickness of 1-1/2 inches (38 mm) and density of 6 lbs/ft3 (96 kg/m3). Insulation shall have a R-Value of 7.3 at 75°F. Installation shall be in strict accordance to manufacturers published installation instructions, UL or ULC Listings, and shop drawings. FastDoor™ XL shall be used for duct access where specified or as required
by code.

© Potter Interior Systems 2019

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