FDS181 – MASTIC (1 GALLON, FIBER-REINFORCED)
$20.82
Foster FDS181 fiber-reinforced mastic, 1 gallon. Water-based duct sealant. UL 181 A-M and B-M listed. For sealing metal, fiberglass, and flex duct connections.
10226 Plano Rd, Suite 104, Dallas TX 75238
Questions? Call or text (214) 340-9421
Mon–Fri 10 am – 7 pm | Sat 10 am – 3 pm
Description
Duct mastic is the best way to permanently seal duct connections and prevent air leaks. This fiber-reinforced version is stronger than standard mastic and meets UL 181 requirements. Brush or trowel it onto joints and seams — it dries to a flexible, airtight seal.
Specs: 1 gallon, water-based, fiber-reinforced, UL 181 A-M and B-M listed, low VOC
Replaces: FDS181GRAY, FDS181WHITE, CADS
Fits: Universal — for sealing metal ductwork, fiberglass ductboard, and flex duct connections
In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.
