Dec 15, 2016 · Type 3R: Intended for outdoor use. Provides a degree of protection against falling rain and ice formation. Constructed (with knockouts on the sides and bottom) to prevent beating rain from interfering with the successful operation of the apparatus or result in wetting of live parts and wiring within the enclosure under specified conditions.

Mar 10, 2023 · “R Photo Sizes” or “R Photo Print Sizes” are commonly used for photo types of paper or “photography” to “print photo” and various other sizes such as “frame”, “postcard”, and “passport”.

In Japan, the same print sizes (and several additional ones) are known by different designations. The Japanese L is equivalent to 3R, while 2L —twice the size—matches 5R. KG represents the size of a traditional 4 × 6 in (4R) Japanese postcard (hagaki). [2]

The most common size for a photo is 4R, or 4 inches by 6 inches, typically because it's not too small and not too big. There are many types of frames available for that size. The aspect ratio of the photo print is 2 by 3, suitable for photos taken on majority of …

Such a capital improvement is defined as a 3R project (resurfacing, restoration, and rehabilitation), partial-reconstruction (4R) project, or full-reconstruction (4R) project. This Chapter discusses the Department’s design criteria for a 3R or partial 4R reconstruction project on a …

May 21, 2019 · "Outdoor use, resistant to FALLING rain", whereas 3R adds "wind driven" rain and sleet, plus a requirement that the enclosure have a "drip lip" on top so that if the door is opened in the rain, the guts are somewhat protected.

3R: As 3, but omits protection against windblown dust. 3S: As 3, but also operable when laden with ice. 3X, 3RX, 3SX: X indicates additional corrosion protection; commonly used near salt water. 4 and 4X: Watertight.

Jun 16, 2023 · ‘The 4R rear axles are Steel. The 3R rear axle is aluminum. 2019 X758 with 54" deck and 3pt hitch / 2023 865R Diesel Signature Gator / 2019 865M Diesel Gator. Both tractors have steel front axles. That’s why there is not a lot of difference up front. ‘The rear axle on the other hand is where there is notable difference.

Jan 1, 2025 · NEMA ratings 3 and 3R are ideal for outdoor use but only when they may come into frequent contact with rain, sleet or snow. NEMA 4 ratings are practically the same as NEMA 3 ratings however they protect against hose-directed water.

Jun 1, 2018 · The 4R (4″ x 6″) is most common and standard print, and it’s the easiest to find frames for. What is the size of a wallet size photo? A wallet size photo is about 2.5″ x 3.5″.