MX Insulated Exterior Access Door
SKU:MX
Introducing the newly redesigned MX- Exterior access door that dramatically improves acoustical and thermal performance and significantly reduces air leaks and water penetration.
- 2X Insulation.
- Factory applied caulking.
- Rust resistant design.
Special Sizes on request.
| Door Size H × W (in.) |
Door Size H × W (mm) |
Wall/Ceiling Opening H × W (in.) |
No. of Stud Catches/Latches |
Shipping Wt. (lbs.) |
Shipping Wt. (kg.) |
|---|---|---|---|---|---|
| 12 × 12 | 305 × 305 | 12 3/8 × 12 3/8 | 1 | 6.3 | 2.9 |
| 18 × 18 | 457 × 457 | 18 3/8 × 18 3/8 | 1 | 10.5 | 4.8 |
| 24 × 24 | 610 × 610 | 24 3/8 × 24 3/8 | 2 | 16 | 7.3 |
| 30 × 22 | 762 × 559 | 30 3/8 × 22 3/8 | 2 | 18 | 8.2 |
| 30 × 30 | 762 × 762 | 30 3/8 × 30 3/8 | 2 | 27 | 12.2 |
| 36 × 24 | 914 × 610 | 36 3/8 × 24 3/8 | 2 | 24 | 10.9 |
| 36 × 36 | 914 × 914 | 36 3/8 × 36 3/8 | 2 | 36 | 16.3 |
The MX is an insulated exterior access door for outside walls and soffits, giving access from outside the building to valves, meters, plumbing and electrical services. Karp redesigned it around the four things that go wrong with an access door in an exterior wall: it leaks air, lets water in at the perimeter, becomes a cold spot in the insulation, and rusts.
What the redesign changed
Insulation is doubled. A door in an insulated wall is a hole in that insulation unless the door is insulated itself, and on an exterior wall that hole shows up as heat loss and condensation at the panel. The double insulation closes that gap and, as a side effect, cuts the sound that comes through the door, which matters on walls next to plant, traffic or a street.
Caulking is applied at the factory. The seal an exterior door depends on is made under controlled conditions rather than left to site, so it is consistent from one door to the next, and the redesigned door significantly reduces air leaks and water penetration as a result. The construction is rust resistant, because exterior hardware that corrodes stops latching and the seal goes with it.
MX or MXPL
Both are exterior doors for outside walls and soffits. The MX is the flush door. The MXPL has a plaster and stucco flange, so it sets into a stucco or rendered finish and finishes level with the coat. Choose by the exterior finish being installed.
Sizes and openings
Seven standard sizes: 12 x 12, 18 x 18, 24 x 24, 30 x 22, 30 x 30, 36 x 24 and 36 x 36 inches, with the two rectangular sizes given height by width. The wall or ceiling opening is 3/8 inch larger than the door in each direction, so a 24 x 24 door needs a 24 3/8 x 24 3/8 opening. The 12 x 12 and 18 x 18 carry one latch and sizes from 24 x 24 up carry two. Shipping weights run from 6.3 to 36 pounds. Special sizes are made on request.
For a soffit, state the orientation when ordering, because the seal and the latch are working upside down rather than in a vertical wall.
