Alpha Associates has been at the forefront of developing flexible air ducts for indoor comfort heating, ventilation and air conditioning as a cost-competitive and space-saving alternative to rigid metal ductwork. In many cases, Alpha’s unique constructions can improve energy efficiencies and reduce total installations costs for air venting and drying applications. A broad range of products are utilized for flexible ducting, depending on key performance values such as thermal performance, friction loss, acoustical performance, static pressure and leakage. Alpha’s product line for flexible ducting includes vinyl coated fiberglass for the highest quality commercial duct applications, aluminum foil and polyester film for cost effective duct core, and a helically wound outer duct jacketing consisting of a three-ply film laminate.

Key: Data Sheet MSDS For additional data sheets or MSDS, contact Customer Service at 800-631-5399.
Style	Construction	Color	Treatment	Nominal Weight (Oz./Sq. Yd.)	Nominal Thickness (Inches)	Maximum Width (Inches)
2213 EAM	Aluminum foil + fiberglass scrim + heat-activated film	Aluminum	Solvent sealable film	2.7	.006	72
13 AM	Aluminum foil + polyester film	Aluminum	Clear film	1.3	.0012	72
4348 AMA	Aluminum foil + fiberglass scrim + metallized polyester film	Aluminum	Metallized film	2.8	.005	72
5515 MA HW	Metallized polyester + fiberglass scrim	Aluminum	Neoprene coating	3.3	.010	72
2278 MAM-J	Metallized polyester + fiberglass scrim + polyester film	Aluminum	Spiral-wound lamination	1.8	.009	72
3478-VS-2	Coated fiberglass fabric	Silver	PVC	4.5	.005	72