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Doubletee Products, LLC is a small manufacturing business dedicated to providing quality products to aircraft manufacturers, builders, restorers and owners. 

Call Us: 937-489-1719

Your One-Stop for Firewall Fittings

Check out our list of spherical metal grommet firewall fittings below. We now offer FREE SHIPPING to the continental United States. We can also CUSTOMIZE our firewall fittings for hole size as well as number of holes (1 or 2).

TTP-A

The A series spherical metal grommet firewall fitting is all aluminum and requires only one hole in the firewall.

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Model 7100

The 7100 spherical metal grommet firewall fitting has a 1 inch steel ball held in place by 2 4130 steel pressure plates. 

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TTP-B

The B series spherical metal grommet firewall fitting has a 1 inch aluminum ball held in place by 2 stainless steel pressure plates.

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Model 4100

The 4100 series spherical metal grommet firewall fitting has a 1 inch steel ball held in place by 1 4130 steel pressure plate. 

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TTP-S

The S series spherical metal grommet firewall fitting has a 1 inch steel ball held in place by 2 stainless steel pressure plates.

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Model 4200

The 4200 series spherical metal grommet firewall fitting has a 1 inch steel ball held in place by 1 4130 steel pressure plate.

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Series 6000 • Model 6100

The 6100 series spherical metal grommet firewall fitting is all steel and requires only one hole in the firewall. 

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Questions? We can help

Check out our list of spherical metal grommet firewall fittings below. We now offer FREE SHIPPING to the continental United States. We can also CUSTOMIZE our firewall fittings for hole size as well as number of holes (1 or 2).

Call Us Anytime: 937-489-1719