True GDM-49 Two-Door Glass Merchandiser — door gasket replacement and on-site fabrication across Chicago and the south and southwest suburbs. We size from the door, install stocked profiles same-day, and cut the rest on the truck.
Door gasket spec
Confirmed dimensions from our catalog — verified against your door before we install.
main door
25.75" × 54.125"
Specs
Gasket dimensions are sized from the physical door at the visit — model specs above are the starting point, not the cut.
Process
Common issues
Glass door sweating
A failed perimeter gasket lets warm air contact the cold glass, fogging the merchandising view.
Fix: Replace the gasket; on heated-frame doors confirm the perimeter heater works.
Gasket discoloration and hardening
Display lighting and cleaning chemicals harden and yellow the gasket over time, breaking the seal.
Fix: Replace with a fresh magnetic gasket sized to the door.
FAQ
The True GDM-49 door gasket measures 25.75" × 54.125", a magnetic snap-in profile (replaces OEM part 810803). We confirm against your door before installing. It's a 2-door unit, so the door count drives the gasket count.
Most Glass-Door Merchandiser door gaskets run $150–$350 installed in Chicago. On a 2-door unit like this we estimate per door and bundle the visit.
Yes — we cut True gaskets on-site from magnetic and push-in extrusion stock carried on every truck, so a back-ordered or discontinued OEM part doesn't stop the repair.
The True GDM-49 door gasket cross-references OEM part 810803. We match it by size and profile (25.75" × 54.125") rather than relying on the OEM stocking it — so a discontinued number is no obstacle.