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Minimum order $100 · Orders $100–$149.99 include a small-order fee ($20 down to $8) · No fee from $150
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Discover an extensive selection of STI products at The Builders Supply. As a leading online store for architectural builders, we offer a vast array of high-quality hardware from hundreds of top brands. Our STI category features innovative solutions designed to enhance your building projects, ensuring durability and reliability. From advanced fire protection systems to security and access control solutions, our curated collection meets the diverse needs of architects, contractors, and builders. Browse through our comprehensive inventory to find the perfect products that align with your project specifications. Enjoy competitive pricing, fast shipping, and exceptional customer service as you shop for STI hardware at The Builders Supply. Elevate your building experience today with premium products that guarantee excellence in every detail. Visit us now and explore the best in STI offerings!

Products [104]

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STI STI-3150 Weather Stopper Seal
STI STI-3150 Weather Stopper Seal
$99.51
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STI SS2421EM-EN Stopper Station
STI SS2421EM-EN Stopper Station
$85.44
In Stock
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STI SS2001EM-EN Stopper Station
STI SS2001EM-EN Stopper Station
$76.69
Special order - ships in 5-10 business days
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STI STI-7521-HTR Polycarbonate Cabinet Hardware
STI STI-7521-HTR Polycarbonate Cabinet Hardware
$255.85
Special order - ships in 5-10 business days
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STI SS2204EM-EN Stopper Station
STI SS2204EM-EN Stopper Station
$76.69
In Stock
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STI SS2439LD-EN Stopper Station
STI SS2439LD-EN Stopper Station
$124.85
Special order - ships in 5-10 business days
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STI STI-1155 Weather Stopper II
STI STI-1155 Weather Stopper II
$143.96
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STI STI-13210NB Universal Stopper Cover
STI STI-13210NB Universal Stopper Cover
$76.99
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STI SS2431LD-EN Stopper Station
STI SS2431LD-EN Stopper Station
$129.24
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STI SS2141EX-EN Stopper Station
STI SS2141EX-EN Stopper Station
$167.56
In Stock
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STI STI-13210NY Universal Stopper Cover
STI STI-13210NY Universal Stopper Cover
$76.99
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STI SS2429EM-EN Stopper Station
STI SS2429EM-EN Stopper Station
$81.05
Special order - ships in 5-10 business days
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STI SS2121EX-EN Stopper Station
STI SS2121EX-EN Stopper Station
$85.44
Special order - ships in 5-10 business days
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STI STI-13020NR Universal Stopper Cover
STI STI-13020NR Universal Stopper Cover
$111.75
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STI STI-13020NW Universal Stopper Cover
STI STI-13020NW Universal Stopper Cover
$114.50
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STI SS2321EM-EN Stopper Station
STI SS2321EM-EN Stopper Station
$85.44
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STI STI-1200 Stopper II No Horn
STI STI-1200 Stopper II No Horn
$72.70
In Stock
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STI STI-13020NB Universal Stopper Cover
STI STI-13020NB Universal Stopper Cover
$114.50
In Stock
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STI SS2422LD-EN Stopper Station
STI SS2422LD-EN Stopper Station
$81.05
In Stock
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STI STI-6400WIR Wireless Exit Stopper
STI STI-6400WIR Wireless Exit Stopper
$148.05
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STI SS2028EX-EN Stopper Station System
STI SS2028EX-EN Stopper Station System
$250.94
Special order - ships in 5-10 business days
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STI SS2408EX-EN Stopper Station
STI SS2408EX-EN Stopper Station
$241.92
Special order - ships in 5-10 business days
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STI NT-SS101-EN Touchless Switch
STI NT-SS101-EN Touchless Switch
$77.55
Special order - ships in 5-10 business days
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STI SS2108PX-EN Stopper Station
STI SS2108PX-EN Stopper Station
$241.92
Special order - ships in 5-10 business days
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STI SS2448EX-EN Stopper Station
STI SS2448EX-EN Stopper Station
$335.41
In Stock
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STI SS2045EM-EN Stopper Station
STI SS2045EM-EN Stopper Station
$163.20
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STI STI-1130 Stopper II with Horn - Spacer
STI STI-1130 Stopper II with Horn - Spacer
$123.94
In Stock
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STI STI-6405 Exit Stopper Door Alarm
STI STI-6405 Exit Stopper Door Alarm
$136.04
In Stock
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STI STI-6402 Exit Stopper Door Alarm
STI STI-6402 Exit Stopper Door Alarm
$127.06
In Stock
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STI STI-6403 Exit Stopper Door Alarm
STI STI-6403 Exit Stopper Door Alarm
$136.04
In Stock
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STI SS2178EX-EN Stopper Station
STI SS2178EX-EN Stopper Station
$311.75
Special order - ships in 5-10 business days
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STI SS2422ZA-EN Shielded Stopper Station - Blue
STI SS2422ZA-EN Shielded Stopper Station - Blue
$90.89
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STI SS2401EX-EN Stopper Station
STI SS2401EX-EN Stopper Station
$76.69
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STI SS2109EX-EN Stopper Station
STI SS2109EX-EN Stopper Station
$72.29
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STI SS2138EX-EN Stopper Station
STI SS2138EX-EN Stopper Station
$295.99
Special order - ships in 5-10 business days
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STI SS2425LD-EN Stopper Station
STI SS2425LD-EN Stopper Station
$81.05
In Stock
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STI SS2428EM-EN Stopper Station
STI SS2428EM-EN Stopper Station
$250.94
Special order - ships in 5-10 business days
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STI SS2231LD-EN Stopper Station
STI SS2231LD-EN Stopper Station
$129.24
In Stock
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STI SS2121ZA-EN Stopper Station
STI SS2121ZA-EN Stopper Station
$95.28
Special order - ships in 5-10 business days
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STI SS2421LD-EN Stopper Station
STI SS2421LD-EN Stopper Station
$85.44
In Stock
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STI SS2429LD-EN Stopper Station
STI SS2429LD-EN Stopper Station
$81.05
Special order - ships in 5-10 business days
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STI SS24A8EX-EN Stopper Station
STI SS24A8EX-EN Stopper Station
$282.46
Special order - ships in 5-10 business days
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STI STI-6583 24V Stopper II Heater Kit
STI STI-6583 24V Stopper II Heater Kit
$80.69
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STI SS2429EX-EN Stopper Station
STI SS2429EX-EN Stopper Station
$81.05
Special order - ships in 5-10 business days
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STI SS2409EX-EN Stopper Station
STI SS2409EX-EN Stopper Station
$72.29
Special order - ships in 5-10 business days
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STI SS2431EM-EN Stopper Station
STI SS2431EM-EN Stopper Station
$129.24
Special order - ships in 5-10 business days
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STI STI-13230NG Universal Stopper Cover
STI STI-13230NG Universal Stopper Cover
$170.66
Special order - ships in 5-10 business days
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STI SS2420EX-EN Stopper Station
STI SS2420EX-EN Stopper Station
$85.44
Special order - ships in 5-10 business days
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STI SS2148EX-EN Stopper Station
STI SS2148EX-EN Stopper Station
$335.41
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STI SS2128EX-EN Stopper Station
STI SS2128EX-EN Stopper Station
$250.94
Special order - ships in 5-10 business days
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STI SS2428EX-EN Stopper Station
STI SS2428EX-EN Stopper Station
$250.94
Special order - ships in 5-10 business days
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STI SS21A1EX-EN Stopper Station
STI SS21A1EX-EN Stopper Station
$116.10
Special order - ships in 5-10 business days
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STI STI-SA5000-A Select Alert Amber Lens
STI STI-SA5000-A Select Alert Amber Lens
$75.74
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STI STI-SA5000-B Select Alert Blue Lens
STI STI-SA5000-B Select Alert Blue Lens
$75.74
In Stock
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STI SS24A9EM-EN Stopper Station
STI SS24A9EM-EN Stopper Station
$111.71
Special order - ships in 5-10 business days
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STI STI-SA5000-R Select Alert Red Lens
STI STI-SA5000-R Select Alert Red Lens
$75.74
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STI SS2122EX-EN Stopper Station
STI SS2122EX-EN Stopper Station
$81.05
Special order - ships in 5-10 business days
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STI SS2140EX-EN Stopper Station
STI SS2140EX-EN Stopper Station
$167.56
Special order - ships in 5-10 business days
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STI STI-1100 Stopper II Hardware
STI STI-1100 Stopper II Hardware
$110.82
In Stock
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STI SS2482LD-EN Stopper Station
STI SS2482LD-EN Stopper Station
$178.52
Special order - ships in 5-10 business days
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STI SS2478EX-EN Stopper Station
STI SS2478EX-EN Stopper Station
$311.75
Special order - ships in 5-10 business days
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STI SS2425EM-EN Stopper Station
STI SS2425EM-EN Stopper Station
$81.05
Special order - ships in 5-10 business days
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STI STI-1200A Stopper II with Horn
STI STI-1200A Stopper II with Horn
$171.84
Special order - ships in 5-10 business days
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STI SS2221LD-EN Stopper Station
STI SS2221LD-EN Stopper Station
$85.44
In Stock
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STI SS2134EX-EN Stopper Station
STI SS2134EX-EN Stopper Station
$129.24
In Stock
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STI STI-9740 Exit Sign Damage Prevention Device
STI STI-9740 Exit Sign Damage Prevention Device
$79.63
Special order - ships in 5-10 business days
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STI SS2408PX-EN Stopper Station
STI SS2408PX-EN Stopper Station
$241.92
Special order - ships in 5-10 business days
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STI SS2442EX-EN Stopper Station
STI SS2442EX-EN Stopper Station
$163.20
Special order - ships in 5-10 business days
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STI UB-1 Universal Push Button Kit
STI UB-1 Universal Push Button Kit
$67.69
Special order - ships in 5-10 business days
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STI SS2188EX-EN Stopper Station
STI SS2188EX-EN Stopper Station
$351.18
Special order - ships in 5-10 business days
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STI STI-6400-R Exit Stopper Door Alarm
STI STI-6400-R Exit Stopper Door Alarm
$112.39
In Stock
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STI UB-2 Universal Push Button Kit
STI UB-2 Universal Push Button Kit
$67.69
In Stock
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STI STI-7511A-HTR Polycarbonate Enclosure
STI STI-7511A-HTR Polycarbonate Enclosure
$216.49
Special order - ships in 5-10 business days
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STI UB-1PN Universal Push Button Kit
STI UB-1PN Universal Push Button Kit
$231.000
In Stock
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STI SS24A9EX-EN Stopper Station
STI SS24A9EX-EN Stopper Station
$111.71
Special order - ships in 5-10 business days
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STI SS21A8EX-EN Stopper Station
STI SS21A8EX-EN Stopper Station
$282.46
Special order - ships in 5-10 business days
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STI SS2428PX-EN Stopper Station
STI SS2428PX-EN Stopper Station
$250.94
Special order - ships in 5-10 business days
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STI SS24A1EX-EN Stopper Station
STI SS24A1EX-EN Stopper Station
$116.10
Special order - ships in 5-10 business days
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STI SS2424EM-EN Stopper Station
STI SS2424EM-EN Stopper Station
$85.44
Special order - ships in 5-10 business days
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STI SS2034EM-EN Stopper Station
STI SS2034EM-EN Stopper Station
$129.24
Special order - ships in 5-10 business days
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STI SS2441EX-EN Stopper Station
STI SS2441EX-EN Stopper Station
$167.56
In Stock
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STI SS2488EX-EN Stopper Station
STI SS2488EX-EN Stopper Station
$351.18
Special order - ships in 5-10 business days
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STI STI-13220NB Universal Stopper Cover
STI STI-13220NB Universal Stopper Cover
$128.55
Special order - ships in 5-10 business days
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STI STI-13020CR Universal Stopper Cover
STI STI-13020CR Universal Stopper Cover
$114.50
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STI STI-13220NR Universal Stopper Cover
STI STI-13220NR Universal Stopper Cover
$128.55
Special order - ships in 5-10 business days
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STI SS2124XT-EN Stopper Station
STI SS2124XT-EN Stopper Station
$85.44
Special order - ships in 5-10 business days
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STI SS2405EX-EN Stopper Station
STI SS2405EX-EN Stopper Station
$72.29
Special order - ships in 5-10 business days
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STI UB-1LTUL Universal Push Button Kit
STI UB-1LTUL Universal Push Button Kit
$122.44
Special order - ships in 5-10 business days
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STI NT-SS102-EN Touchless Switch
STI NT-SS102-EN Touchless Switch
$77.55
Special order - ships in 5-10 business days
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STI STI-SA5600-B Select-Alert Siren Strobe
STI STI-SA5600-B Select-Alert Siren Strobe
$66.88
Special order - ships in 5-10 business days
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STI SS2108EX-EN Stopper Station
STI SS2108EX-EN Stopper Station
$241.92
Special order - ships in 5-10 business days
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STI SS2108XT-EN Stopper Station
STI SS2108XT-EN Stopper Station
$241.92
In Stock
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STI SS24A4EX-EN Stopper Station
STI SS24A4EX-EN Stopper Station
$116.10
In Stock
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STI SS2400EM-EN Stopper Station
STI SS2400EM-EN Stopper Station
$76.69
Special order - ships in 5-10 business days
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STI SS2101EX-EN Stopper Station
STI SS2101EX-EN Stopper Station
$76.69
Special order - ships in 5-10 business days
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STI SS2121LD-EN Stopper Station
STI SS2121LD-EN Stopper Station
$85.44
Special order - ships in 5-10 business days
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STI SS2401LD-EN Stopper Station
STI SS2401LD-EN Stopper Station
$76.69
Special order - ships in 5-10 business days
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STI SS2202PO-EN Stopper Station
STI SS2202PO-EN Stopper Station
$72.29
Special order - ships in 5-10 business days
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STI SS2424LD-EN Stopper Station
STI SS2424LD-EN Stopper Station
$85.44
Special order - ships in 5-10 business days
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STI STI-9729 Wire Cage
STI STI-9729 Wire Cage
$76.58
Special order - ships in 5-10 business days
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STI SS2125XT-EN Stopper Station
STI SS2125XT-EN Stopper Station
$81.05
Special order - ships in 5-10 business days
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STI SS2379EX-EN Stopper Station
STI SS2379EX-EN Stopper Station
$140.19
Special order - ships in 5-10 business days
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STI SS2401EM-EN Stopper Station
STI SS2401EM-EN Stopper Station
$76.69
In Stock
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STI SS2285PO-EN Stopper Station
STI SS2285PO-EN Stopper Station
$178.52
Special order - ships in 5-10 business days
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Explore a diverse range of STI products at The Builders Supply, your go-to destination for top-quality hardware solutions. Our extensive selection includes innovative architectural hardware, security systems, and essential building materials from trusted brands. Whether you're a contractor or a DIY enthusiast, you'll find the perfect components to meet your project needs. Discover our premium offerings in door locks, access control systems, and safety equipment designed to enhance any construction or renovation project. With competitive pricing and fast shipping, The Builders Supply ensures you have access to the best tools and hardware in the industry. Shop now to elevate your building experience with STI's exceptional products!
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