Guide to Free Camping Blocks are bright yellow for

Blocks are bright yellow for high visibility and easier positioning after dark

The air enters the vent through a larger opening and is then compressed as it is forced through a smaller opening

Width (IN): 17-3/4 Inch

Meets V5 and SAE J684 certifications

Tan/Gold Flare 141673 8€™ X 16€™

Guide to Free Camping Blocks are bright yellow forGuide to Free Campgrounds, This new 700 page, 14th edition contains approximately 14,000 public campgrounds $12 and under including national parks and forests, public lands, Corps of Engineers campsites, state parks, city and county parks and small private campgrounds. This new version also has more RV type campgrounds and lists Eastern and Western areas by city and state.