Walthers Cornerstone HO Scale Roof Details Kit 3 – Rooftop HVAC & Vent Detail Set – 933-3733

Walthers Cornerstone HO Scale Roof Details Kit 3 – 933-3733

Add essential rooftop realism and industrial detail to your HO Scale structures with the Walthers Cornerstone Roof Details Kit 3. Designed to enhance warehouses, factories, commercial buildings, and industrial facilities, this versatile detail set provides a wide range of rooftop equipment commonly found on North American prototype buildings.

Modern and historic industrial structures rely on rooftop HVAC systems, vents, exhaust stacks, and mechanical equipment to support operations inside the building. These details are often highly visible from elevated viewing angles on model railroads, making them critical for adding depth, realism, and visual complexity to city and industrial scenes.

This kit includes a comprehensive assortment of air conditioning units, swamp coolers, vents, blower systems, exhaust stacks, and directional venting components. With multiple styles included, it allows modelers to customize rooftops for different industries, eras, and building types across their layout.

Pair this detail kit with structures from Fusion Scale Hobbies’ Walthers Cornerstone HO Scale Background Buildings, expand your industrial scenes using our Walthers Trains Collection, or complete your railroad environment with our full Walthers Collection.

Key Features

• Official Walthers Cornerstone HO Scale detail kit
• Wide variety of rooftop HVAC and mechanical equipment
• Includes air conditioners in multiple sizes
• Multiple vent styles including cyclone, monitor, and smokejack vents
• Includes exhaust stacks, blowers, and swamp coolers
• Highly detailed molded plastic components in gray
• Perfect for industrial, commercial, and warehouse rooftops
• Mix-and-match parts for custom rooftop arrangements

Product Specifications

• Manufacturer: Walthers Cornerstone
• Manufacturer Part Number: 933-3733
• Scale: HO Scale
• Product Type: Structure Detail Kit
• Material: Injection Molded Plastic
• Assembly Required: Yes
• Era: 1950s to Present

Perfect For

• Industrial warehouses
• Manufacturing plants
• Commercial buildings
• Urban downtown structures
• Rail-served factories and industries
• Modern and transition-era layouts

Enhance rooftop realism and operational authenticity across your HO Scale railroad with detailed mechanical equipment that brings structures to life. Explore more detailing parts in our HO Scale Walthers Cornerstone Buildings Collection or complete your layout environment with our Walthers Cornerstone Structures Collection.