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 valid...

concrete inserts. Support horizontally installed grease duct from the building structure using above method or use Duct Mate, Wire Rope & Clutchers, part numbers WR20 & CL20. 1/2” threaded rod and saddles may also be used for the support of hor.

2020年10月2日 · The grease duct is required to slope to prevent the accumulation of grease in horizontal installations. Grease duct is either routed through a fire rated shaft enclosure or wrapped with an approved fire insulating blanket that allows for zero clearances, such as that manufactured by 3M.

Thin, lightweight and flexible, 3M™ Fire Barrier Duct Wrap 615+ provides excellent insulating capabilities and offers a space-saving alternative to traditional bulky fire protection methods obtained through a gypsum wall shaft or enclosure. This wrap is commonly used in commercial kitchen grease ducts, as well as ventilation ducts.

Grease Duct Enclosure System i. Installation on Grease Duct per ASTM E2336 and CAN/ULC S144 (Figure 1) • System requires two layers of insulation applied directly to the duct with tight butt joints minimum 1.5” (38mm) compression at all seams on both layers.

Standard Method ofire F Resistance Test - Grease Duct Assemblies. UL 2221 Listing: DuraVents Model DIS3Z is classified in accordance with UL 2221 (Tests of Fire Resistive Duct Enclosure Assemblies) as an alternate to a 2-Hr. fire resistive shaft enclosure with a minimum zero clearance to combustibles

In-line exhaust fans not located outdoors shall be enclosed as required for grease ducts. A grease duct shall penetrate exterior walls only at locations where unprotected openings are permitted by the International Building Code. The grease duct enclosure shall serve a single grease duct and shall not contain other ducts, piping or wiring systems.

For Grease Duct applications requiring a shaft enclosure or a zero clearance installation, the ductwork can then be wrapped with Unifrax FyreWrap Elite 1.5 or Max 2.0 duct insulation, consisting of two layers applied directly to the duct surface in accordance with Unifrax’s installation instructions.

Factory-Built Grease Duct Enclosures: A listed system evaluated for reduced clearances to combustibles and as an alternative to a duct with its fire-rated enclosure.

UL 2221 Standard for Tests of Fire Resistive Grease Duct Enclosure Assemblies – Under this listing, DWFL-ZC has been determined to be an effective grease duct and as a fire rated enclosure system and through penetration firestop system.