noun
Refers to a predefined ceiling or quota, often used in financial, administrative, or resource-allocation contexts.
予算の限度枠を超えないように注意してください。
Please be careful not to exceed the budget limit.
このカードの限度枠は50万円です。
The credit limit on this card is 500,000 yen.
枠 alone means a frame or a slot; 限度枠 combines it with 限度 to emphasize a bounded allowance.
Compound of 限度 (limit) and 枠 (frame, quota). The exact historical derivation is uncertain, but the word is a straightforward modern combination.