How many cells thick is the nephron capsule wall?

glomerular capsule - The double-walled endothelial cup which surrounds the glomerulus in the renal corpuscle of the nephron of the kidney; it consists of epithelial cells, the outer or parietal layer which forms the wall of the capsule is composed of a simple squamous lining, while the inner or visceral layer is composed of a simple layer of highly specialized cells, the podocytes, which have cytoplasmic processes which adhere to the capillary wall of the glomerulus to assist in filtration of the blood passing through the glomerulus; the two layers are separated by a small capsular space which receives the plasma filtrate which is drawn from the blood.