True 810778 Back Bar & Direct Draw Cooler Door Gasket — TBB-24-48 / TBB-2 / TBB-3 / TBB-4 / TDD-2 / TDD-3 Dart-to-Dart (23-1/2" x 32-1/8") vs Outside (24-1/4" x 32-7/8") Cross-Reference

Verified OEM part-number cross-reference, Dart-to-Dart (23-1/2" x 32-1/8") vs. Outside-to-Outside (24-1/4" x 32-7/8") caliper dimensions, and 4-sided magnetic wide push-in dart profile guide for True 810778 Back Bar & Direct Draw Kegerator Door Gaskets (TBB-24-48, TBB-2, TBB-3, TBB-4, TDD-2, TDD-3).

⚠ CRITICAL MEASUREMENT TRAP: True TBB Back Bar and TDD Direct Draw Coolers use two different gaskets depending on door construction. Solid stainless/black vinyl swing doors (TBB-24-48, TBB-24-60, TBB-24-72, TBB-2, TBB-3, TBB-4, TDD-2, TDD-3) require OEM 810778 measuring 23-1/2" x 32-1/8" Dart-to-Dart (24-1/4" x 32-7/8" Outside-to-Outside) with a wide push-in dart. Glass swing doors (TBB-2G, TBB-3G, TBB-24-48G) require OEM 810779. Always verify solid vs. glass door and Dart-to-Dart vs. OD before ordering!

Verified Reddit Fit Complaint: r/refrigeration & r/BarOwners — True TBB-24-48 / TBB-2 solid vs glass door 810778 vs 810779 gasket dimension trap

Verified OEM Spec Sheet Fit Complaint: Parts Town & CoolerGaskets — True OEM 810778 Wide Push-In Dart Back Bar Door Gasket Verification

Side-by-Side Dart-to-Dart vs. Outside Dimension & Retainer Profile Matrix

Verified Caliper Dimensions, OEM Part Numbers & Retainer Dart Profiles

OEM Brand & Model	Dart-to-Dart vs Outside Size (In)	Retaining Dart / Profile Spec	Measurement / Profile Trap	OEM Price	Verified NSF Gasket Match	Direct Spec Links
True TBB-24-48 / TBB-2 / TBB-3 / TBB-4 Solid Swing Door (OEM 810778) Cabinet Fit Group: True TBB Solid Door Back Bar Series	Dart: 23.50" x 32.125" \| OD: 24.25" x 32.875" 23-1/2" x 32-1/8" (Dart-to-Dart) \| 24-1/4" x 32-7/8" (OD)	4-Sided Magnetic Push-In Wide Dart (True OEM 810778 Black PVC)	True specs 810778 at 23-1/2" x 32-1/8" Dart-to-Dart (24-1/4" x 32-7/8" Outside-to-Outside) — fits solid doors on TBB-24-48/60/72 & TBB-2/3/4	$96.00 OEM	CoolerGaskets True 810778 NSF Black Magnetic Gasket $43.95 Save 54%	Verify Exact Fit → Amazon
True TDD-2 / TDD-3 / TDD-4 Direct Draw Beer Dispenser (2-Door & 3-Door Pack — OEM 810778) Cabinet Fit Group: True TDD Direct Draw Kegerator & TBB Multi-Door Kit	Dart: 23.50" x 32.125" \| OD: 24.25" x 32.875" (2-Door Set) 23-1/2" x 32-1/8" (Dart) \| 24-1/4" x 32-7/8" (OD)	4-Sided Magnetic Push-In Wide Dart (True OEM 810778 2-Pack)	Replacing both kegerator/back-bar door seals together stops mullion condensation and bar floor puddles	$192.00 (2-Door OEM Set)	CoolerGaskets True 810778 2-Door Back Bar Value Bundle $82.90 (2-Pack) Save 57%	Verify Exact Fit → Amazon
True TBB-2G / TBB-3G / TBB-24-48G Glass Swing Door (OEM 810779 Comparison) Cabinet Fit Group: True TBB-G Glass Door Back Bar Series	Dart: 22.50" x 31.25" \| OD: 23.25" x 32.00" 22-1/2" x 31-1/4" (Dart) \| 23-1/4" x 32" (OD)	4-Sided Magnetic Push-In Narrow Glass-Frame Dart (OEM 810779)	WARNING: Glass swing doors (TBB-2G, TBB-3G, TBB-24-48G) require narrower OEM 810779 — 810778 is 1" wider and will NOT fit glass doors	$98.00 OEM	CoolerGaskets True 810779 Glass-Door Back Bar Seal $44.95 Save 54%	Verify Exact Fit → Amazon

Frequently Asked Commercial Door Gasket Measurement & Fit Questions

Q: What are the exact caliper dimensions of the True 810778 back bar cooler door gasket?

True OEM 810778 measures 23-1/2" x 32-1/8" (23.50" x 32.125") from Center-of-Dart to Center-of-Dart, and 24-1/4" x 32-7/8" (24.25" x 32.875") Outside-to-Outside. It uses True's 4-sided black NSF PVC magnetic wide push-in dart profile.

Q: Which True back bar and direct draw kegerator models use OEM gasket 810778?

OEM 810778 fits solid swing doors on True TBB-24-48, TBB-24-60, TBB-24-72, TBB-2, TBB-3, TBB-4 back bar coolers as well as True TDD-2, TDD-3, and TDD-4 direct draw beer dispensers. Glass swing door models (with a 'G' suffix like TBB-2G or TBB-24-48G) require OEM 810779 instead.

Q: How do I install a True 810778 push-in dart gasket without corner gaps?

Soak the replacement True 810778 gasket in warm water (110°F–120°F) for 10 minutes to relax shipping creases. Snap the 4 corners into the door's retaining slot first, then press the middle of each rail inward without stretching the vinyl.

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Verified OEM part-number cross-reference, Dart-to-Dart vs. Outside-to-Outside caliper dimensions, and retaining dart profile guide for True ...