material-icon-sizes.scss

.material-icons {

		&.md-18 {
			height: 18px;
			width: 18px;
			font-size: 18px;
			min-height: 18px;
			min-width: 18px;
		}
		&.md-24 {
			height: 24px;
			width: 24px;
			font-size: 24px;
			min-height: 24px;
			min-width: 24px;
		}
		&.md-30 {
			height: 30px;
			width: 30px;
			font-size: 30px;
			min-height: 30px;
			min-width: 30px;
		}
		&.md-36 {
			height: 36px;
			width: 36px;
			font-size: 36px;
			min-height: 36px;
			min-width: 36px;
		}
		&.md-48 {
			height: 48px;
			width: 48px;
			font-size: 48px;
			min-height: 48px;
			min-width: 48px;
		}
	}