Sentinel - Industrial Sectional Doors


The most secure door in the industry!

The Thermostop™ Sentinel doors are your high security sectional doors which offer both a strong deterrent to intrusion and the highest insulation performance.

Since 1984, architects, building design consultants and end users have recognized the extraordinary dual quality of the Thermostop™ Sentinel doors and have used them for applications such as:

  • Pharmaceutical plants and warehouses
  • Research laboratories
Performance tests
  • ASTM E-283 (Air Leakage): Less than 0.130 cfm/ft2 at 25 miles/hour
  • ASTM E-547 (Water Penetration): Absolutely no leak
Size capacity Doors up to 24' wide by 16' high (7315mm wide by 4877mm high)


Manufacturing process

2,3,4             inches insulation

2" (50mm), 3" (75mm) and 4" (100mm) thick

The inner core consists of rigid polyurethane, foamed in place under high pressure between two metal skins.

Joint and seal Joint and             sealHigh quality galvanized steel skins roll formed into an exclusive tongue-and-groove joint with a true thermal break and a double-shaped weather seal (single seal for the Mark II models).

Metal skins / Finish

2 options available :

Sentinel 20ga.             steel

20ga. steel :
Thermostop™ Sentinel,
model Mark II-200(2"),
Mark III-200(3")
or Mark IV-200(4")
Finish : White, smooth finish, with ribs.

Sentinel 16ga.             steel

16ga. steel :
Thermostop™ Sentinel,
model Mark II-166(2"),
Mark III-166(3")
or Mark IV-166(4")
Finish : Smooth finish, shop painted color

weather seal
Perimeter seal3-lip, flexible PVC weather seal, retained in an extra robust extruded aluminum retainer.
weather seal
Bottom sealU-shaped, flexible PVC weather seal, retained in a heavy duty extruded aluminum retainer, securely fastened to the bottom of the door.
End caps End capsSections are equipped with 16ga. (1.42mm) thick galvanized steel end caps.
Glazing options Type A

Type A (for the Mark II models only) :
Full view extruded aluminum panel.
Standard anodized finish.

Type B

Type B :
Black square frame.
Double acrylic or 1/8" - 1/8" sealed glass.
Standard 24" x 12".

Type C

Type C :
Black round corner frame.
Double acrylic glass.
Standard 24" x 12".

Type E

Type E :
White square frame windows.
Standard 24" x 12".

Hardware and electric operators

Recommended models (for 10 000 cycles springs) :

  • Up to 12'(W) x 12"(H)
    - Hardware model 80-T with electric motor XTRA-H
  • Up to 16'(W) x 16'(H)
    - Hardware model 80-THD with electric motor XTRA-HHD
  • More than 16'(W) x 16'(H)

Note :
For more information, please consult the and the sections.