Yamahisa Co., Ltd. Begins Handling "Super Gantaro 2," an Indoor Earthquake-Resistant Steel Frame Shelter

Yamahisa Co., Ltd. (Headquarters: Taiyuji-cho, Kita-ku, Osaka; hereinafter "the Company"), which operates a housing renovation business, will begin handling sales of the "Super Gantaro 2" (※), a prefabricated earthquake-resistant steel frame shelter, starting Wednesday, April 15, 2026. ※"Super Gantaro 2" is a registered trademark of KTX Co., Ltd. The Company has traditionally offered the renovation-type earthquake-resistant shelter "Shelter-kun," supporting the peace of mind of many customers. To meet the growing demand for quicker and simpler installation, we are now adding the indoor-installation type "Super Gantaro 2" to our product lineup. This will enable us to propose more diverse earthquake-resistant solutions tailored to each customer's housing situation and needs. "Super Gantaro 2" ■Features and Differentiation of the Two Shelters "Super Gantaro 2" is a prefabricated earthquake-resistant steel frame shelter that can be installed indoors in existing homes. It features overwhelming speed, with assembly completed in as little as 15 minutes, and robustness capable of withstanding loads of over 10 tons. It is ideal for those who want to quickly secure a "life-saving box" without the need for extensive construction. On the other hand, "Shelter-kun," our proud renovation-type earthquake-resistant shelter, is a "space regeneration type" solution that integrally reinforces the room's structure itself and finishes the interior beautifully. In addition to its safety as a shelter, it offers the added value unique to our company, a renovation specialist, by "not compromising the comfort or design of the everyday living space at all." At our company, ・For those who want to secure a strong and safe space with solid construction while maintaining the quality of daily life: "Shelter-kun" Renovation-type earthquake-resistant shelter "Shelter-kun" steel frame assembly Renovation-type earthquake-resistant shelter "Shelter-kun" after interior completion ・For those who want to quickly install an evacuation space in a specific location in the shortest possible time: "Super Gantaro 2" Indoor-installation type earthquake-resistant shelter "Super Gantaro 2" In this way, we will continue to provide optimal proposals tailored to each customer's life plan. ■Background of Lineup Enhancement In recent years, as preparation for large-scale earthquakes has become an urgent matter, there has been a growing earnest desire from people saying, "It's difficult to renovate the entire house at once, but first I want to create a place that will surely protect lives." Through our high-quality renovation-type "Shelter-kun," we have so far proposed home building that allows people to live safely and securely for a long time. By also handling the highly mobile "Super Gantaro 2," we will deliver "peace of mind through preparation" to even more people, including those who had hesitated to take measures due to budget or construction period constraints. ■Target Customers and Anticipated Usage Scenarios ・Those living in wooden houses built under old earthquake resistance standards who want to take quick measures. ・Elderly households, etc., who want to install it in a short period without significantly changing their living patterns. ・Those who want to add peace of mind to their current home while looking ahead to future rebuilding, or those who want to create a "safe zone" pinpointed in places where they spend a long time, such as bedrooms or living rooms. ■Future Developments By developing earthquake-resistant shelters on both axes—renovation-type and indoor-installation type—the Company will flexibly respond to the diversifying disaster prevention needs of customers and further promote the widespread adoption of earthquake-resistant measures. Going forward, we aim to create opportunities for customers to directly experience the characteristics of both products through exhibitions and disaster prevention events, and to spread "the best preparation tailored to housing conditions" throughout society. ■Product Overview Name: Earthquake-resistant steel frame shelter "Super Gantaro 2" Start of handling: From April 15, 2026 Price: <4.5 tatami mat type> Approximately 600,000 yen~ (excluding tax) <6 tatami mat type> Approximately 900,000 yen~ (excluding tax) ※Shipping and assembly costs are separate. ※Additional costs may apply if construction such as floor reinforcement is required. Size/Weight: <4.5 tatami mat type> 2300×2300×2200 Weight approx. 340kg <6 tatami mat type> 3200×2500×2200 Weight approx. 420kg Material: Steel frame SS400 Features: ・Adds the strength of steel frame to wooden houses ・Overwhelming load-bearing performance due to unique structure (vertical load 10 tons) ・Speedy installation process enables quick preparation ※Super Gantaro 2 is a registered trademark of KTX Co., Ltd. KTX Co., Ltd. is a research and development company that leverages its safety and reliability manufacturing technology cultivated through automotive molds to create new products in the disaster prevention and mitigation fields, such as "water stop plates" and "earthquake-resistant steel frame shelters." Contact for product inquiries: Yamahisa Co., Ltd. Customer Center TEL.0120-36-1374 Yamahisa's original earthquake-resistant structure "Shelter-kun" is a renovation method that converts one room of an existing house into an earthquake-resistant shelter. It creates a safe evacuation space with a strong earthquake-resistant steel frame structure. URL: https://www.yamahisa.co.jp/shelta/ Name: Earthquake-resistant shelter "Shelter-kun" Price: 2 million yen~ (per room) ※Steel frame only Features: ・Strong steel frame structure capable of withstanding loads of up to 31 tons ・Compatible with wooden houses and houses built under old earthquake resistance standards (※). Can be installed regardless of building age. ・Low cost due to the construction method of installing inside without modifying the main structure of the building. ・Speedy construction with short construction period, can be installed while living in the house (no need to move out). ・High degree of freedom in interior finishing, allowing for room creation according to requests. ・Comfortable to use as before, without compromising space or design after installation. ・Subsidies for "earthquake-resistant shelters" have been newly established or expanded in many municipalities. ※Earthquake resistance standards applied to building confirmations until May 31, 1981, which are considered to have insufficient earthquake resistance. ■Company Profile Company Name: Yamahisa Co., Ltd. Location: Headquarters: Nippon Life Umeda Second Building 4F, 3-24 Taiyuji-cho, Kita-ku, Osaka 530-0051 Offices: Headquarters/Osaka Branches/Sapporo, Tokyo, Nagoya, Osaka URL: https://www.yamahisa.co.jp/ Founding Year: Founded January 24, 1973 Business Activities: Housing renovation and construction business