We choose our printing processes for each product carefully so you receive the best quality product at the lowest price with industry-leading turnaround times. Depending on your size, material, quantity, and other factors, your sign will print using one of our carefully-tested methods.
Warning Carbon Dioxide Gas Do Not Enter Sign
- Item #:
- A5393
- Sign Reads:
- Warning. Carbon dioxide gas can cause injury or death. When alarm operates, do not enter until ventilated.
- Sign Design:
- Asphyxiation Symbol
- Language:
- English. Also available in Bilingual (English/Spanish).
- Compliance:
-
- LEED Compliant
- NFPA
- ANSI Z535 / OSHA
Other configurations of this product

A Warning Carbon Dioxide Gas Do Not Enter Sign clearly informs workers in your facility to follow safety instructions when a carbon dioxide extinguishing system activates. Make sure employees understand the dangers of inhaling carbon dioxide gas, after an alarm operates they must not enter until area is ventilated.
This sign has official ANSI headers for safety protocol and compliance. NFPA 12 Standard on Carbon Dioxide Extinguishing Systems requires this sign be installed in a conspicuous location at every entrance to a protected space.
5 × 3½″
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Material | Packaging | Overlaminate | Mounting Holes | Sku | Quantity/Price | ||||||
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3.5 Mil Peel and Stick Vinyl Label | Sold in Packages of 5 | N/A | N/A | A5393-AA | $15.95 | $14.50 | $13.95 | $12.00 | $10.95 | $9.75 | |
3.5 Mil Peel and Stick Vinyl Label | Sold in Packages of 50 | N/A | N/A | A5393-AAB | $69.50 | $63.45 | $57.00 | $54.10 | $45.25 | $39.25 |
7 × 5″
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Material | Packaging | Overlaminate | Mounting Holes | Sku | Quantity/Price | ||||||
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3.5 Mil Peel and Stick Vinyl Label | Sold Individually | N/A | N/A | A5393-B2L | $4.75 | $4.15 | $3.65 | $3.45 | $3.25 | $3.00 |
10 × 7″
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Material | Packaging | Overlaminate | Mounting Holes | Sku | Quantity/Price | ||||||
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3.5 Mil Peel and Stick Vinyl Label | Sold Individually | N/A | N/A | A5393-AL | $6.45 | $6.35 | $5.80 | $5.25 | $4.25 | $3.60 | |
.055″ Polyethylene Plastic | Sold Individually | N/A | Four 7/32″ holes (one in each corner) | A5393-BL | $7.20 | $7.00 | $6.80 | $6.60 | $6.20 | $5.25 | |
4 Mil Glow-in-the-Dark Peel and Stick Polyester Label | Sold Individually | N/A | N/A | A5393-DL | $12.95 | $12.75 | $12.50 | $12.25 | $11.75 | $10.75 | |
.040″ Rust-Free Aluminum | Sold Individually | None | Four 7/32″ holes (one in each corner) | A5393-FL | $11.70 | $11.30 | $10.85 | $10.25 | $8.55 | $7.90 | |
.046″ Glow-in-the-Dark Plastic | Sold Individually | N/A | Four 7/32″ holes (one in each corner) | A5393-L1L | $27.00 | $20.75 | $18.50 | $16.25 | $14.75 | $13.50 | |
.040″ Engineering Grade Reflective Aluminum | Sold Individually | None | Four 7/32″ holes (one in each corner) | A5393-R1L | $13.15 | $12.85 | $12.30 | $11.25 | $10.00 | $8.60 |
14 × 10″
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Material | Packaging | Overlaminate | Mounting Holes | Sku | Quantity/Price | ||||||
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3.5 Mil Peel and Stick Vinyl Label | Sold Individually | N/A | N/A | A5393-AK | $9.95 | $8.50 | $8.15 | $7.85 | $6.95 | $6.05 | |
.055″ Polyethylene Plastic | Sold Individually | N/A | Four 7/32″ holes (one in each corner) | A5393-BK | $10.35 | $9.85 | $9.35 | $8.75 | $7.45 | $6.25 | |
4 Mil Glow-in-the-Dark Peel and Stick Polyester Label | Sold Individually | N/A | N/A | A5393-DK | $19.90 | $17.90 | $16.90 | $16.50 | $15.90 | $14.90 | |
.046″ Glow-in-the-Dark Plastic | Sold Individually | N/A | Four 7/32″ holes (one in each corner) | A5393-EK | $32.70 | $31.10 | $29.50 | $27.50 | $25.80 | $23.40 | |
.040″ Rust-Free Aluminum | Sold Individually | None | Four 7/32″ holes (one in each corner) | A5393-FK | $18.25 | $17.25 | $15.10 | $14.50 | $13.80 | $11.50 | |
.040″ Engineering Grade Reflective Aluminum | Sold Individually | None | Four 7/32″ holes (one in each corner) | A5393-R1K | $19.95 | $19.20 | $16.75 | $16.25 | $15.75 | $12.25 |
18 × 12″
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Material | Packaging | Overlaminate | Mounting Holes | Sku | Quantity/Price | ||||||
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.055″ Polyethylene Plastic | Sold Individually | None | Four ¼″ holes (one in each corner) | A5393-B65 | $17.75 | $15.50 | $14.75 | $14.25 | $13.75 | $12.85 | |
.063″ White Rust-Free Aluminum | Sold Individually | None | Four ¼″ holes (one in each corner) | A5393-B6C | $19.75 | $17.75 | $16.75 | $15.75 | $14.75 | $13.75 | |
.063″ Engineering Grade Reflective Aluminum | Sold Individually | None | Four ¼″ holes (one in each corner) | A5393-B6D | $22.95 | $21.45 | $20.45 | $19.95 | $18.95 | $17.25 |
Phone: 800-274-6271
Fax: 800-279-6897
Viewing Distance*
* Under favorable viewing conditions.
- All
- Brackets
- Cones
- Foam Bumpers
- Hardware
- Tape
- Ties
- Tools
Size | Width | Height | Available Materials | Mounting Holes | Corner Radius | Diagram |
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5 × 3½″ | 5″ | 3½″ |
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N/A | ⅛″ | Diagram |
7 × 5″ | 7″ | 5″ |
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N/A | ¼″ | Diagram |
10 × 7″ | 10″ | 7″ |
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N/A | ¼″ | Diagram |
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Four 7/32″ Holes (#10 or 3/16″ screws recommended) | ¼″ | Diagram | |||
14 × 10″ | 14″ | 10″ |
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N/A | ¼″ | Diagram |
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Four 7/32″ Holes (#10 or 3/16″ screws recommended) | ¼″ | Diagram | |||
18 × 12″ | 18″ | 12″ |
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Four ¼″ Holes (#12 or 7/32″ screws recommended) | ½″ | Diagram |
Material | Thickness | Outdoor Durability | Service Temp. Range | Available Sizes |
Overlaminate |
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Labels | |||||
Adhesive-Backed Vinyl Outdoor grade high gloss calendared vinyl film, and coated with aggressive LEED compliant acrylic adhesive formulated to adhere to a variety of surfaces, ensuring durability in most commercial and industrial environments. Resistant to fading and mild chemicals. This material is in compliance with the standards set forth by the South Coast Air Quality Management District (SCAQMD) Rule #1168 and the Green Seal Standard, GS-36 for commercial adhesives pertaining to Volatile Organic Compounds (VOC). Clean and dry surface before applying. Minimum application temperature is 50°F. | 3.5 mils | 4 to 5 Years | -20° to 176° F |
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N/A |
Glow-in-the-Dark Adhesive-Backed Polyester 4 mils thick glow-in-the-dark polyester film with a LEED compliant adhesive, suitable for indoor and outdoor applications. Not resistant to contact with chemicals. This material will glow for up to 10 hours when it is charged with a strong light source for at least 60 minutes. Daylight color is soft-yellow to eggshell white. Color in darkness is photoluminescent yellowish. Storage stability of 1 year. Elongation, 164.0% with a tensile strength of 3.1 K/ 10mm. This material meets or exceeds DIN 67510-I, ASTM 2072, ISO 15370, IMO Res.A.752 (18), JIS Z9100, NYC RS6-1. Clean and dry surface before applying. Minimum application temperature is 60°F (15°C). | 4 mils | Indefinite Indoors / Up to 3 years Outdoors | 120° F (50° C) Max. |
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N/A |
Plastic | |||||
Polyethylene Plastic A tough plastic that is rust free and resistant to chips, cracks, fading and mild chemicals. It is an economical alternative to aluminum without a significant compromise in durability. Thicknesses of .055" and less will easily bend to fit certain surfaces without causing material fractures. | 0.055″ | 3 to 5 Years | -40° to 180° F |
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N/A |
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Glow-in-the-Dark Plastic .046" photoluminous plastic will not rust, is resistant to chips and cracks, and will easily bend to certain surfaces without causing material fractures. It is designed for indoor use only. This material can be charged by any light source in as little as 15 minutes, and will glow for up to 10 hours when it is charged with a strong light source for at least 60 minutes. Cool white light sources such as fluorescent lighting and sunshine are excellent activators. Soft warm lighting such as incandescent light bulbs are not as effective. This material meets or exceeds DIN 67510-I, ASTM 2072, ISO 15370, IMO Res. A.752 (18), JIS Z9100, NYC RS6-1. | 0.046″ | Indoor Use Only | -4° to 122° F |
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N/A |
Aluminum | |||||
Rust-Free Aluminum A durable metal material that will not chip, crack, or rust, offers superior resistance to harsh weather conditions, and has good chemical resistance properties. The optimal choice for outdoor usage. | 0.04″ | 5 to 7 Years | -40° to 212° F |
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0.063″ | 5 to 7 Years | -40° to 212° F |
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Engineering Grade Reflective Aluminum
A durable enclosed lens retro-reflective material permanently adhered to aluminum. It is an economical choice for non-critical traffic signs, parking lot signs, and safety signs. The pattern free face allows for clean graphic imaging. It meets the requirements of ASTM D4956 Type I, and will remain effective for up to 7 years. Resistant to fading and mild chemicals.
Reflectivity:
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0.04″ | Up to 7 Years | -10°F - 130°F |
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0.063″ | Up to 7 Years | -10°F - 130°F |
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None | Engineering Grade | High Intensity Prismatic | Diamond Grade | |
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ATSM D956 Type | – | Type I | Type IV | Type IX |
Brightness | – | Standard Material | 3x More | 10x More |
Night-Time Visibility | – | 500' | 1,000' | 1,500' |
Reflectivity |
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SafetySign.com’s advanced printing process undergoes a stringent cross-hatching test. This specifically tests the adhesion and resistance to separation of the inks from the sign. In testing, a sample from the printing process is scored and covered in adhesive tape. The tape is removed and the sample assessed for adhesion quality.
We use a three-stage process to test all of our printing processes. We print our signs using only the processes that pass all three stages, giving you the highest quality signage possible.

The text is printed in Arial font.
A Warning Carbon Dioxide Gas Do Not Enter Sign from SafetySign.com uses this font to create a bold message that stands out in order to grab your attention, while also remaining clearly legible at the maximum safe viewing distance of the product.