The Model 43-10-10 is very similar to the Ludlum Model 43-10-1, but this instrument has been modified to allow for counting of iCam air monitor filter cards. The sample drawer has a cutout that fits the iCam filter card. The dimensions of the iCam filter card are 5.1 x 8.8 x 0.064 cm (2 x 3.5 x 0.025 in.) [H x W x D]. It will also hold up to a 60 x 4.7 mm (2.36 x 0.187 in.) sample.