∀ {ι : Type u_1} (R : ι → Type u_2) [inst : (i : ι) → Monoid (R i)] {S : ι → Type u_3}
  [inst_1 : (i : ι) → SetLike (S i) (R i)] [inst_2 : ∀ (i : ι), SubmonoidClass (S i) (R i)] {B : (i : ι) → S i}
  {𝓕 : Filter ι} (x : (RestrictedProduct (fun i => R i) (fun i => ↑(B i)) 𝓕)ˣ),
  ∀ᶠ (i : ι) in 𝓕, RestrictedProduct.coeUnits x i ∈ (fun i => ↑(Submonoid.ofClass (B i)).units) i