THIS IS A PAIR OF BRAND NEW REPLACEMENT BEMIS HUMIDIFIER RUBBER DRIVE BELTS. WHY TWO BELTS? YOU NEVER KNOW WHEN YOU NEED A SPARE. THE BELT IS 3/32" BY 20" LONG. IF YOU ARE MISSING YOUR BELT YOU CAN RUN A STRING AROUND THE PULLEYS TO GET A BELT LENGTH. IT SHOULD BE VERY CLOSE TO 20". THE BELT IS MADE OUT OF RUBBER SO IT HAS SOME GIVE. THE ORIGINAL PART NUMBER IS: 5460030. THIS BELT FITS ALL BEMIS, VAPORALL, COAST TO COAST, CROSLEY, AND WEST BEND MODELS USING WATER WHEELS WITH BELT FILTERS. THIS BELT REPLACES BEMIS AND VAPORALL PART NUMBERS 5460030, P4-236, P4236, P4, P-4-236, P-4, 236.