3250-Z and 4250-Z Zero Sightline Insert Vents

    3250-Z Series

    • 3 1/4” frame depth with polyurethane or polyamide thermal barrier

    4250-Z Series

    • 4” frame depth
3250-Z and 4250-Z  Zero Sightline Insert Vents

4000i-DT Behavioral Care

    • 4” frame depth with polyamide nylon thermal barrier
    • AAMA AW-120 air, water and structural performance
    • Fixed or side-hinged in-swing casements for cleaning or custodial ventilation
    • Mitered and corner-blocked frame and vent construction
4000i-DT Behavioral Care

TD-4250i Terrace Doors

    • 4 1/2” frame depth with polyamide thermal barrier – Integrates with other Wausau products
    • AAMA AW-60 (single) AW-50 (French) Performance Class
    • In-swing or out-swing operation
TD-4250i Terrace Doors


    • 5-7/8" frame depth for high spans and wind loads; polyamide thermal barrier
    • Half-slide, end-slide, center-slide, and center-open two-track configurations side-stack with INvent™ fixed lites

Trim and Accessories