ONKO Owl Nesting Box — Large 22.8×13.8×10 in Great Horned Owl House, Weatherproof & Ventilated

ONKO's Large Great Horned Owl House is a weatherproof, roomy outdoor nesting box sized to comfortably accommodate large owl species like great horned and barn owls.

This heavy-duty owl nesting box combines extra interior space, ventilation, and an easy-clean design to create a secure, long-lasting shelter that mimics natural tree cavities. Built from waterproof materials with drainage and airflow features, the box reduces moisture and helps maintain a comfortable interior year-round. It arrives with simple assembly instructions and mounting hardware so you can install a wildlife-friendly nesting site quickly in your yard, park, or conservation area.

How much space does this owl house provide?

The ONKO large owl house measures approximately 22.83" high × 13.78" long × 10.24" wide, offering generous room for larger owl species to roost and care for nestlings. The interior is designed so adults can move and spread their wings without feeling cramped, which is important for nesting success and comfort.

• Interior dimensions sized for great horned and barn owls
• Elevated cavity-style profile to prevent crowding
• Ample floor area for eggs and nest material

What weather protection and ventilation does it offer?

Constructed with waterproof materials and a moisture-proof layout, the box stands up to rain and seasonal changes while preventing rot and warping. Ventilation and angled side gaps promote steady airflow and allow drainage, cutting down on humidity and helping keep the interior dry and comfortable.

• Waterproof exterior panels resist decay
• Strategic vents and drainage holes prevent moisture buildup
• Durable joints and finishes withstand outdoor exposure

Is the nesting box easy to install and maintain?

Yes—ONKO designed the unit for straightforward, one-person assembly and mounting, with clear instructions and included hardware. A secure safety latch on the access panel lets you open the box quickly for cleaning or inspection, making routine maintenance fast and safe.

• All mounting hardware and step-by-step guide included
• Panels align for quick, tool-minimal assembly
• Front or side access with a safety latch for easy cleaning

Will this box attract predators or need special placement?

Placement and mounting height affect safety; installing the box on a sturdy post or tree at a recommended height reduces predator access. The raised cavity design and robust construction help shield occupants, but combining the box with sensible landscape choices increases nesting success without guaranteeing outcomes.

• Mount on stable supports away from heavy human traffic
• Avoid low branches and ground-level predators when choosing location
• Orientation and height can encourage occupancy while reducing threats

Who is this for: This ONKO Large Great Horned Owl House is aimed at backyard naturalists, land managers, wildlife rehabilitators, schools, and conservation groups seeking a spacious, durable nesting box for large owls. It fits projects that need a long-lasting outdoor shelter with easy maintenance and thoughtful ventilation, suitable for promoting owl presence without altering natural habitat features.