The heavy duty QDC300 series door closers are designed for multi-family, tenant, improvement uses such as apartment complexes, retail/storefront, small office buildings and hotels/motels where a stylish, yet durable product is required
Tested to significantly exceed the performance requirements for Grade 1 certification.
Fully adjustable from 1-6 allowing for maximum flexibility.
Delayed Action and Backcheck are standard in the same door closer body.
All weather oil insures optimal operational performance in multiple climate conditions.
Sized for interior doors to 4'6"; exterior doors to 4'0".