

The Janus International 600 Series Insulated Rolling Service Door delivers durability, thermal efficiency, and high performance. Its 24–18 gauge slats with a 24-gauge back encase a 5/8-inch polyurethane core (R-value 7.2). Sizes range from 40' x 16' to 28' x 26' with optional Windload and Miami-Dade certifications, making it ideal for industrial, commercial, and climate-controlled applications.
Extra savings. Delivers durability and extra thermal efficiency with an insulation value of R-7.2, reducing energy consumption while maintaining internal building temperatures. From the applications video: the 600 Series insulated door is the choice for climate-controlled and energy-efficient buildings, with windload and Miami-Dade options for high-wind regions.
Compare it with the 400 and 400HP in the 400 vs 400HP vs 600 service door comparison sheet, read the rolling steel door replacement ROI guide, or watch the rolling steel door applications video. Not sure which series fits? Try the door selector tool.
Headroom, sideroom and hood dimensions vary by model, operation and guide type. Download the clearance requirements or shop drawing for this series below, or ask your Janus representative for a dimensioned drawing for your opening.
Shop Drawing - Model 620IM Impact Rated (FL 15918.3)
Technical Specifications - 600 Series Insulated Steel Backed
Technical Specifications - 600 Series Windload Certified Insulated
Technical Specifications - Model 624 Insulated Steel Backed
Installation Instructions - Series 600
Clearance Requirements - Series 600
| Product Type | Insulated steel or stainless steel | ||
| Model Description | Insulated Rolling Service Door | ||
| Models | 624 (24/24-ga), 622 (22/24-ga), 620 (20/24-ga), 618 (18/24-ga), 622S/620S (stainless) | ||
| Insulation | 5/8" injected polyurethane foam core, R-value 7.2 | ||
| Slat Profile | 3" Flat-265, 2-5/8" x 5/8", with 24-gauge backer | ||
| Maximum Size Width x Height | From 40' x 16' to 28' x 26' (varies by model; stainless 24' x 24') | ||
| Operation | Reduction gear chain hoist standard; electric operation optional | ||
| Standard Guides | 3-piece structural steel, 3/16" minimum, with 30" service cut-out | ||
| Bottom Bar | Double angle with weather seal | ||
| Certified Options | Windload up to ±50 PSF (varies by size/model); Miami-Dade impact rated 80 ft/sec and +60/-65 PSF | ||
| Finishes | White, gray or tan topcoat; galvanized; powder coat; stainless #4 | ||
| Warranty | 2-year limited; paint 40-year film integrity / 25-year no-fade | ||
The 600 Series door sheet gives sizes from 40' x 16' to 28' x 26'; the model table on the same sheet lists 26' x 30' or 31' x 20'. Confirm the maximum for your opening with Janus.

Energy savings
Doors that no longer seal create energy loss. Insulated rolling steel helps keep the building at temperature and keeps employees near the docks more comfortable.
*Illustrative examples from the Janus Rolling Steel Door Replacement ROI Guide. Actual results vary based on facility size, climate, usage frequency, labor costs and door specifications.
Compare
The three Janus rolling service doors side by side, from the Service Door Comparison Sheet.
| 400 SeriesHeavy Duty Service Door | 400HP SeriesHigh Performance Door | 600 SeriesInsulated Service Door | |
|---|---|---|---|
| Built for | Extra protection | Extra speed | Extra savings |
| Max size | 40' wide or 30' high | 14' wide × 20' high | 40' × 16' to 28' × 26', by model |
| Opening speed | Standard | Up to 24" per second | Standard |
| Standard cycles | 25,000 (50,000 or 100,000 optional) | 400,000 (600,000 optional) | 25,000 (50,000 or 100,000 optional) |
| Insulation | No | No | R-7.2 |
| Windload / Miami-Dade | Optional | No | Optional |
| DC motor | No | Yes | Optional |
| Counterbalance | Springs | Springless barrel | Springs |
Applications
From the Janus Rolling Steel Application Guide.
Door Selector Tool
Answer eight quick questions about the building, the opening and how the door will be used. The Door Selector shows every Janus rolling steel, commercial sheet and mini door that fits, with specifications, door sheets and a quote link on every result.
Videos
The Complete Guide to Commercial Doors.
Explore our full line of commercial sheet doors and rolling steel doors in one convenient resource. Compare products, review specifications, and discover the right solution for virtually any application.
Tell us about the opening and a Janus commercial team member will help you find the right door, fast.