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ThermaSeal® TM320

Sectional Insulated Steel Door

With the benefits of the TM300, plus a heavy-duty 20-gauge exterior, the Raynor ThermaSeal® TM320 sectional insulated steel door is perfect for meeting job specific requirements without sacrificing the features you expect from a Raynor ThermaSeal® door.

Ideal for commercial warehousing, agriculture, fire station, and ambulance bays, refrigerated buildings, underground parking, and high-security facilities.

TM320 Features & Options

Raynor ThermaSeal® TM320 commercial doors are available with numerous features and options, including those listed below.

Maximum Thermal Protection

Energy-saving polyurethane foam insulation is used to deliver an exceptional 24.54 R-value for the TM320.

Rugged Hardware and Springs

Your Raynor ThermaSeal® door comes packaged with the right combination of long-lasting hardware, track, and springs to precisely match your door’s size and application.

Reduced Airflow

Dual vinyl barriers dramatically reduce air infiltration. A true thermal break prevents heat loss and eliminates any metal-to-metal contact between surfaces.

Decreased Energy Costs

Raynor ThermaSeal® doors help you reduce energy costs with a u-shaped, vinyl bottom weatherseal and sturdy aluminum retainer.

Choice of Windows

Select either 24″ x 8″ (shown), 24″ x 12″, or 34″ x 16″. Raynor ThermaSeal® doors are also available with aluminum fullview window sections. Choose from a variety of insulated glass, acrylic, tempered and polycarbonate styles to suit any application.

High-Cycle Counterbalance Systems

For reliable operation in high traffic areas, choose high-cycle torsion springs with 25,000, 50,000 or 100,000-cycle life.* For reduced maintenance and ultra-smooth operation in heavy-use applications, choose a weight counterbalance system. *Some options may be limited to door size or model.

Customized Track and Hardware Systems

Track systems are supplied to fit special clearances, inclines or contour applications. Hardware and track systems can be designed to fit any need. Additional trussing is available for special wind loading applications. A QuikClip™ pre-assembled track option is also available.

Secure Locks

In applications where control and access are important, choose from a variety of locking options to help keep your building secure. Locks come in both inside and outside variations.

Carbon Monoxide Vent

Allows you to channel fumes to the outside when the door is closed. Available in a variety of sizes.


Raynor ThermaSeal® TM320 commercial doors are available in White.

Optional Post Paint Process


Raynor’s ColorWave™ features Sherwin-Williams® next generation post paint system for your garage door. With 1,500 colors to choose from, home and business owners can couple this elite paint system with state of the art Raynor manufacturing to craft the perfect look for their home or project.

Product Details

Type Commercial Sectional Insulated Steel Garage Doors
Model ThermaSeal® TM320
Size 38′ x 24′ Max
Operation Manual, Motor or Hand Chain
Construction 3-Layer Sandwich
Material Steel
Surface Texture Stucco Exterior flush; Stucco Interior pencil groove
Section Joint Tongue-in-Groove
Section Thickness 3″
Gauge Steel; Exterior: 20-Gauge; Interior: 26-Gauge
Stiles 16-Gauge
Insulation NeuFoam Polyurethane (24.54 R-value)
Seals Thermal Break, Bottom Seal (3″ Vinyl, 4″ EPDM, or 3″ Yellow); Optional Header Seal
Trussing 20 P.S.F. Wind Load (designed 13.3); Material: U-bar Trusses 4″, 6″, or 8″ sizes. No U-bar required up to 20′ 2″ wide.
Panel Configuration NA
Color White. Raynor’s ColorWave™ with 1,500 Sherwin-Williams® colors.
Windows 24″ x 8″, 24″ x 12″, rigid frame fullview window in 34″ x 16″, or fullview aluminum section. Choose from clear insulated glass and clear insulated tempered.
Type Normal Headroom, Rear Mount Low Headroom, Front Mount Low Headroom, Lift Clearance, Vertical Lift, Incline, Contour, and QuikClip™ Pre-Assembled Track Options
Finish Galvanized
Size 2″ or 3″
Gauge Minimum 16-Gauge
Counterbalance System
Type Torsion Spring, Tandem Shaft Torsion Spring, or Weight Counterbalance
Springs Spring Inner Diameter: 2-1/4″, 3-1/2″ or 5-1/2″; Duplex or High Cycle (25K, 50K, 100K)
Shafts Tube (13-Gauge) or Solid (D-Shaft, 1″ Keyed, 1-1/4″ Keyed)
Hinges 11, 13, 14-Gauge or Hybrid
Rollers Standard or Heavy Duty
Finish Galvanized
Lock Interior Slide Lock or Exterior Lock Bars
Seal(s) Header Seal or Jamb Seal
Hanger Angle 11, 13, 16-Gauge

Specifications and Drawings

Word Document PDF document
Raynor Quick Spec Microsoft Word Document PDF Document
CSI Master Format Microsoft Word Document PDF Document

Technical Information

Section and Panel Schedules

 Door Opening
  Door Opening
  Max no.
of Windows
7’-1” to 8’-1” 4 8’-0” to 9’-2” 2
8’-2” to 10’-1” 5 9’-3” to 12’-2” 3
10’-2” to 12’-1” 6 12’-3” to 16’-2” 4
12’-2” to 14’-1” 7 16’-3” to 19’-2” 5
14’-2” to 16’-1” 8 19’-3” to 24’-2” 6
16’-2” to 18’-1” 9 24’-3” to 28’-2” 7
18’-2” to 20’-1” 10 28’-3” to 32’-2” 8
20’-2” to 22’-1” 11 32’-3” to 38’-2” 9

Product Literature

ThermaSeal Series Warranty


Raynor® warrants the door sections against defects in material and workmanship, and deterioration due to rust-through for ten (10) years from date of delivery to the original purchaser. Raynor also warrants the door sections against delamination of the polyurethane foam insulation from the steel skins for ten (10) years from date of delivery to the original purchaser. Window components are warranted against defects in material and workmanship for one (1) year from date of delivery to the original purchaser.


Raynor warrants all hardware and spring components against defects in material and workmanship for one (1) year from date of delivery to the original purchaser.

ColorWave™ Post Paint Process

Raynor warrants the ColorWave post paint process (exterior only) against chipping, cracking, and/or peeling (losing adhesion), for a period of (5) five years from the date of delivery to the original purchaser. Fading and chipping, cracking, or peeling caused by dents or scratches is not covered under this warranty.


Under the terms of this limited warranty, for any door components that are found to be defective upon inspection by authorized Raynor personnel, Raynor will, at its option, repair or replace the defective door components. Labor charges for the installation or repairs shall be the responsibility of the consumer and must be performed by a qualified installer. This warranty applies only to doors that are professionally installed by a qualified installer.

This warranty extends only to the original purchaser, provided the door is installed in his/her place of business. This warranty is not transferable.

This warranty does not apply to any damage or deterioration to the door caused by abuse, negligence, missing components, accidents, use of pressure washers, dents or scratches. Shavings from trolley rails not properly removed and cleaned from the exterior door surface causing rust are not covered by this warranty. Failure to provide proper maintenance voids this warranty. Field applied paint failure is not covered by this warranty. Refer to the Care and Maintenance Instructions and Painting Instructions.

This warranty does not apply to damage caused by fire, an act of God, accident, vandalism or graffiti. Damage or deterioration caused by saltwater coastal areas (within two miles), hazardous or corrosive chemicals and fumes including, but not limited to, alkaline, acids, muriatic acids, road salt or salt environments, harsh cleaning agents, and fertilizers is not covered by this warranty.

Raynor shall not be liable for any consequential or incidental damages.


Some states do not allow the exclusion or limitation of consequential or incidental damages, so the above limitation or exclusion may not apply to you.

Claims for defects in material and workmanship covered by this warranty shall be made in writing with proof of purchase and photographs of the product in question to the dealer from whom the product was purchased or call Raynor at 1-800-4-RAYNOR within the warranty period. Raynor may choose to have the product returned for inspection.

This warranty gives you specific legal rights. You may also have other rights, which may vary from state to state.