SLIMDUCT® 100MM (3-3/4"") WALL INLET BROWN SLIMDUCT® PROFESSIONAL GRADE CONSTRUCTION OFFERS STRENGTH AND LONGEVITY EVERYONE CAN APPRECIATE. AVAILABLE IN 3 SIZES SLIMDUCT® WILL ACCOMMODATE SINGLE AND MULTIPLE EXPOSED LINE SETS WITH 3 COLOR CHOICES AND CAN COMPLIMENT NEUTRAL OR PAINTED FACADES. A COMPLETE LINE OF FITTINGS ASSURES EACH INSTALLATION CAN BE FINISHED BOTH QUICKLY AND PROFESSIONALLY.