--- product_id: 38099155 title: "SmartSign 3.5 x 5 inch “This Door Must Remain Unlocked When Building Is Occupied” Sticker Label, 3 mil Laminated Adhesive Polyester, Red and White, Made in USA" brand: "smartsign" price: "139.27 DT" currency: TND in_stock: true category: "Smart Sign" url: https://www.desertcart.tn/products/38099155-smartsign-3-5-x-5-inch-this-door-must-remain store_origin: TN region: Tunisia --- # Aggressive adhesive sticks to flat & curved surfaces instantly UV-resistant, weatherproof overlaminate protects against fading 3 mil laminated polyester for 5-year outdoor durability SmartSign 3.5 x 5 inch “This Door Must Remain Unlocked When Building Is Occupied” Sticker Label, 3 mil Laminated Adhesive Polyester, Red and White, Made in USA **Brand:** smartsign **Price:** 139.27 DT **Availability:** ✅ In Stock ## Summary > 🚪 Keep it unlocked, keep it safe — the sign that means business. ## Quick Answers - **What is this?** SmartSign 3.5 x 5 inch “This Door Must Remain Unlocked When Building Is Occupied” Sticker Label, 3 mil Laminated Adhesive Polyester, Red and White, Made in USA by smartsign - **How much does it cost?** 139.27 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/38099155-smartsign-3-5-x-5-inch-this-door-must-remain) ## Best For - smartsign enthusiasts ## Why This Product - Trusted smartsign brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Spot It Instantly:** Glossy red and white finish commands attention, enhancing visibility and compliance in busy professional environments. - • **Write Your Own Notes:** Surface accepts permanent marker, letting you customize or update instructions on the fly. - • **Stick It Anywhere, No Fuss:** Aggressive adhesive backing guarantees quick, hassle-free installation on any clean, flat or curved surface—indoors or out. - • **Built to Last, Rain or Shine:** Premium 3 mil laminated polyester ensures your safety message stays vibrant and intact for 5+ years outdoors. - • **Graffiti & Grime? No Problem:** UV-resistant, weatherproof laminate shields against moisture, chemicals, abrasion, and even graffiti—just wipe clean. ## Overview The SmartSign 3.5 x 5 inch “This Door Must Remain Unlocked When Building Is Occupied” sticker is crafted from durable 3 mil laminated polyester with a glossy red and white finish. Designed for both indoor and outdoor use, it features an aggressive adhesive for easy application on flat or curved surfaces. Its UV-resistant, weatherproof overlaminate protects against fading, moisture, chemicals, and graffiti, ensuring long-lasting visibility and compliance in professional settings. ## Description SmartSign 3.5 x 5 inch “This Door Must Remain Unlocked When Building Is Occupied” Sticker Label, 3 mil Laminated Adhesive Polyester, Red and White ## Features - DURABLE POLYESTER: 'Door Must Remain Unlocked' labels are made from 3 mil thick conformable laminated polyester that has 5-year outdoor life and aggressive adhesive backing. - EASY INSTALLATION: Material has an aggressive adhesive backing. Just remove the liner and apply the label to any clean surface. Labels stick to flat or curved surfaces and can be used indoors or outdoors. - LAMINATED PROTECTION: UV-resistant, weatherproof overlaminate protects the label from moisture, solvents, chemicals, abrasion and fading. Easily wipe off graffiti, dirt, dust, or grease. - GLOSSY FINISH: Labels look premium and can be spotted easily with their glossy finish, easy to clean and mar-resistant. The surface may be written on with permanent marker. - PACK CONTENTS: One 3.5 x 5 inch red and white Label. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0089P62XC | | Best Sellers Rank | #1,139,523 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #41,754 in Industrial Warning Signs | | Brand | SmartSign | | Brand Name | SmartSign | | Customer Reviews | 4.0 out of 5 stars 2 Reviews | | Item Dimensions L x W | 3.5"L x 5"W | | Manufacturer | FireExtinguisherSigns | | Material | Adhesive Signs and Labels | | Mounting Type | Door Mount | | Part Number | S-1591-EU-05 | | Pre Printed Text | Letter | | Pre-printed | Letter | | Product Dimensions | 3.5"L x 5"W | | Size | 3.5" x 5" | ## Images ![SmartSign 3.5 x 5 inch “This Door Must Remain Unlocked When Building Is Occupied” Sticker Label, 3 mil Laminated Adhesive Polyester, Red and White, Made in USA - Image 1](https://m.media-amazon.com/images/I/71vPAhG0XnL.jpg) ![SmartSign 3.5 x 5 inch “This Door Must Remain Unlocked When Building Is Occupied” Sticker Label, 3 mil Laminated Adhesive Polyester, Red and White, Made in USA - Image 2](https://m.media-amazon.com/images/I/71XKD0rI2rL.jpg) ![SmartSign 3.5 x 5 inch “This Door Must Remain Unlocked When Building Is Occupied” Sticker Label, 3 mil Laminated Adhesive Polyester, Red and White, Made in USA - Image 3](https://m.media-amazon.com/images/I/71pvcyxAQpL.jpg) ![SmartSign 3.5 x 5 inch “This Door Must Remain Unlocked When Building Is Occupied” Sticker Label, 3 mil Laminated Adhesive Polyester, Red and White, Made in USA - Image 4](https://m.media-amazon.com/images/I/71z2HltGK7L.jpg) ![SmartSign 3.5 x 5 inch “This Door Must Remain Unlocked When Building Is Occupied” Sticker Label, 3 mil Laminated Adhesive Polyester, Red and White, Made in USA - Image 5](https://m.media-amazon.com/images/I/71Uvc9e3a-L.jpg) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/38099155-smartsign-3-5-x-5-inch-this-door-must-remain](https://www.desertcart.tn/products/38099155-smartsign-3-5-x-5-inch-this-door-must-remain) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-29*