Comes With Built In Durable Insect Protection Screen to keep the insects out. Outside dimensions - 11.79" x 7.86" Inches; Dimensions between screw holes - 11.25 x 7.20" Inches. Usable for both - indoors and outdoors. Easy to install fresh air vent cap - grill cover. Louvered design for better look and better air flow. Helps to keep the wind, rain and snow from entering outdoor dryer vents. Paintable metal components contain UV stabiliser to reduce fading due to exposure to sunlight Durable Material: Made of High Quality Metal and is rust free. Fits perfectly with other Vent Systems HVAC products. VENT SYSTEMS is a company with a long tradition and experience. We provide innovative solutions in the field of ventilation of premises. We are constantly striving to develop and deliver even better, more advanced and more efficient technologies that would enable our customers to enjoy healthy fresh air indoors. All products undergo thorough quality control. We also have a professional service and periodic maintenance system for maintaining system reliability for many years. We have created the value of the VENT SYSTEMS brand by putting particular emphasis on: QUALITY OF THE PRODUCT - WIDE RANGE OF PRODUCTS - MEETING THE CUSTOMER'S NEEDS.