Only ONE Air-Chamber is needed up near the Hinges.
Using masking tape to help hold the seal before you glue-in. This will allow you to see how and where the seal will install, then use a Marker Pen to mark the location. 26 Feet Total of Air-Chambers (13 Feet per roll of Twin Chambers) ONLY one (1) Air-Chamber is needed at most locations of your door, however: use two, or three Air-Chambers where needed. Split down the center.
NO two doors are the same. So you will need to determine how many Air-Chambers will be needed…and where...
Then simply Peel 'n Stick, But remember to Glue it-in one-day, as instructed with Piper, Cessna, Mooney, Beech all aircraft Seals, their seals come with NO Glue...Up-Date our Peel n' Stick is so strong the adhesive will LAST 10 years...or longer, then apply small amounts of contact glue as needed
Using a Razor-Blade → ← Cut the Twin-Air-Chambers into two halves...Move one Chamber to the Rear of the Door where Gaps are larger
The area of the door near the hinges ONLY one Air-Chamber is needed. Near the rear or anywhere Gaps are wide, use two or three Chambers....even 4-Chambers wide, YES we provide enough seal material.
Aircraft Shown is a Piper Cherokee, but all Models are Approved and the Seal will install the same Fast & Easy way.
Thank you...AvTek engineering listens and then reinvents.
Buy the -02 Twin-Air Chamber Seal Kit Only $99.95 Works on 100% every Aircraft, soon FAA-PMA on Pressurized Models