Engineered with compression spring operators to provide smooth, easy, one-hand operation, regardless of size
Automatic hold-open arm locks the cover in the open position to ensure safe egress
Overlapping cover design, full welded corners on cover and curb, EPDM rubber gasket, and fully insulated cover ensure weather-tightness and energy efficiency
Constructed with corrosion-resistant materials to provide many years of trouble-free, dependable service
Heavy gauge construction and positive latching mechanism maintain building security
Available in many sizes and curb configurations to satisfy any requirement or installation

Drawings