TinnerFlow™Flex Duct, Boots, Grilles & Diffusers
Flex runs, boots, register boxes, slot diffusers, grilles, hard-lid openings, sagging, kinks, and finish fit.
Flex Duct, Boots, Grilles & Diffusers questions
What is the SMACNA maximum allowable length for a flex duct run?2nd Year · Stop / VerifyHow do I properly strap flex duct to avoid "sag" and restricted airflow?2nd Year · Check firstWhat's the correct way to seal a flex duct connection (zip tie vs. metal band vs. tape/mastic)?2nd Year · Stop / VerifyHow do I install a register boot in a hard-lid (drywall) ceiling so it sits flush?2nd Year · Check firstWhat's the trick to running flex duct over a congested plumbing rack without pinching it?2nd Year · Check firstUnder what conditions am I allowed to use flex duct in a commercial kitchen?4th Year · Stop / VerifyWhat is the procedure for blowing out the ductwork to remove dust before final grilles go on?4th Year · Check firstWhat should I check when flex duct is sagging and starving a room?1st Year · Standard CorrectionDrywall crushes flex duct in a wall cavity2nd Year · Check firstHow do I fix flex duct that kinks right off the plenum box?1st Year · Standard CorrectionHow do you line up multi-section linear slot diffusers so the joints look clean?2nd Year · Standard CorrectionHow do you fix a linear slot plenum box that will not fit because the ceiling framing is tight?2nd Year · Check firstWhy does flex duct kink right at a register boot collar?1st Year · Standard CorrectionWhy can overtightening a flex duct band clamp hurt the installation?1st Year · Field Reference