602R6 DucTite® Register Box with Snap Rail Flange conforms to 2009 IRC M601.4.1 which requires joints and seams to be "Substantially Airtight". #602R6 DucTite® Register Boxes are insulated at the plant with a true R-6 DucTite® Insulator of EPS. DucTite® is a registered trademark of M&M Manufacturing Company
‡Ductless Stock Up and Save offer valid thru May 31, 2019 at participating CE locations. Account must be active and in good standing condition to qualify for terms. Excludes special pricing and all accessories. Special quotes, OEM parts & job pricing excluded. Not valid on previous purchases. Offer cannot be combined with other offers or programs. Management reserves the right to modify or end this promotion at any time without notice. Orders must be placed and taken delivery by May 31, 2019.