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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 $5 SHIPPING per order 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 $5 SHIPPING per order 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